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Brandi in Heat

By: ArtyGee



I enjoy corresponding with readers and if you send me an e-mail or post a comment from your account, I will respond to you.

Although I appreciate constructive criticism and suggestions, any nasty or abusive comments (particularly the anonymous ones) will be deleted. 

I hope you enjoy this story and if you read it all, please take a moment to rate it with the stars at the end. It only takes a second. 

As a work of friction, none of the people, places or activities described herein has ever happened.

*****

The research had finally been completed and it was conclusive. His hypothesis had been supported. It was possible. Better than that, it seemed that the mechanism was actually quite simple. So simple in fact, that it was almost incomprehensible that nobody had discovered it before now. Of course, that was because nobody had been looking. All that remained was some laboratory testing to provide objective evidence of it's veracity.

The research ethics committee contained three women and they did not see any need for this research to proceed, and so he had been stopped dead in his tracks. Never mind that. He used his own money and that of friends to develop a serum. A serum that he would use to conduct his research and possibly change the relationship between men and women forever.

It had all started when Gordon had acquired a cat from his girlfriend. Rather, she had abandoned it with him when she left to pursue other romantic opportunities. She was a sweet cat, docile and gentle, and very much a lap cat, until she came into "season". 

He hadn't recognized it immediately when she came into heat. It seemed that suddenly this gentle cat became quite cantankerous. Howling night and day and trying at every opportunity to escape through any opening. In addition, male cats began to gather around and attempt to get inside. The whole situation started him thinking about animal sexuality.

Many female animals periodically pass through a state of sexual frenzy associated with their estrous. When they are most fertile, they actively seek sexual contact with males of their species.. It is a survival mechanism which has stood them in good stead over many millennia of evolution. 

He had studied, worked, experimented and he had finally settled on what appeared to be the correct compounds. All that remained to be done was a human trial. 

"CLINICAL TRIAL PARTICIPANTS WANTED.

If you are a healthy woman between the ages of 18 and 30 and not currently using birth control pills, we will pay you $5000 to be part of our trial for a new fertility drug. Please call the clinic to arrange an appointment with Doctor Gordon James to learn more."

Brandi read the poster again and wrote down the number. She was certainly qualified. At 27 she was well within the age limits, and she had stopped taking birth control last semester after she broke up with Harold. No need to spend that money if she wasn't sexually active. Having quit her low paying clerical job to go back to college, funds were extremely tight and she was up to her eyes in debt. It was starting to look like she would have to drop out, at the very least take a semester off, unless she could scrape up some serious coin. This clinical trial might just be her salvation. She was a little uncomfortable with the idea of someone messing with her reproductive system, but the money was just too good for her not to at least investigate the trial.

Gordon was becoming a bit disheartened. He'd had several women interview for the study, but none of them were quite what he was looking for. Two were quite overweight, one had been so anorexic that he doubted that she was even menstruating at all, and then there had been a long string of drug addicts looking to score some cash to support their habit. It had all been quite discouraging, until she had walked in through the door. 

Her long black hair cascaded down past her shoulders, framing a wide face with bright eyes and high cheekbones. She had nice full breasts and wide hips. Child bearing hips his mother might have said. Certainly she could have stood to lose a few pounds, but not much more than 10. Promising. Very promising.

As the interview progressed, he found her to be quite bubbly and upbeat. In another situation he might have asked her for a date. She told him about her need for money and her trepidation about the subject of the trial. He had explained what was involved, taking particular pains to assure the beautiful coed that it would be minimally invasive. No more than two pelvic exams and a small procedure with a special scope. They had a female gynecologist available if that would make her more comfortable. 

For her part, Brandi had found him to be quite attractive, in a professional kind of way. She turned on her charm and even flirted a bit. It was kind of sexy and she felt a bit naughty talking about her sex life and menstrual cycle with this stranger, but he was kind and gentle and in another situation she might even have entertained seeing him for a cup of coffee to see if anything developed. 

When Gordon told her that she would be required to stay at the clinic during the week long trial she almost backed out, but when he suggested that they could schedule everything for spring break, she agreed to participate. Knowing her dire financial circumstance, Gordon offered her a five hundred dollar up front bonus if she signed the contract and release papers that day.

And so it was that two weeks later, Brandi arrived at the clinic with an overnight bag, ready to begin her spring break adventure. A nurse took her medical history, gave her a hospital gown to wear and showed her where to store her things. After she was settled in, Gordon came in to check on her. She thought again about how handsome he was and became quite embarrassed to be sitting there in only the short backless gown as they chatted. 

Gordon tried to retain his professional demeanor, but it was very difficult. This was it. He couldn't help noticing her large soft breasts hanging loosely under the gown and wondered what they would feel like in his hands. When he shifted his position, he caught a glimpse of her naked back and buttocks in the mirror. He felt himself thicken at the sight of her and was glad when the nurse arrived to give her a thin robe to cover her more completely.

"As I mentioned, although we know the drug is safe, there may be some unknown side effects and that is why we are doing the clinical trial and why you have to stay here for the duration," Gordon explained. "Now it appears that everything is in order so if you are ready, I think we can begin."

Brandi felt her pulse quicken. This was it. She had been poked and prodded and inspected but now the trial was really going to begin. She reminded herself of the money, took a deep breath and nodded her assent. The cold from the alcohol swab added to her nervousness causing her to give a little shiver. A quick jab and the nurse was pushing the plunger down to inject the drug into her arm. No backing out now. 

She was almost expecting to feel something different. Like the world had changed. But everything looked and felt the same as it had before. There was a slight sting where the needle had been followed by a little warmth under her skin, but that was all. She felt the same as she had before. 

"Was that it? I kind of expected a larger dose, you know, like a IV bag or something," she babbled. "It all just seems so anti-climactic that I get a little prick, then stay here for a week of observation. I really don't feel anything. Am I supposed to feel anything?"

Gordon almost laughed out loud when she said she'd gotten a little prick. He was pretty certain that she would be wanting a lot of prick, big and little, in the very near future.

"No. Not yet," Gordon soothed. "Please relax you may not experience any abnormal feelings at all. It's a trial, we just don't know what to expect for sure," he lied.

Of course HE knew what to expect. There was no question in his mind about what was going to happen to Brandi. The question was how, exactly, would the symptoms present? Was the dosage correct for her weight? Would there be any unexpected side effects? How would she react after the drug wore off? 

The video cameras were rolling and he was confident that he would get the answers to all his questions by the time the week was out. He felt a little twinge of guilt that he hadn't specifically told Brandi about the cameras, but she had signed a release so he knew that he was in the clear if she ever found them out, and the 24/7 monitoring would allow them to dissect the week down minute by minute later.

"OK then," Gordon announced. "You just do whatever you would normally do, study, read, watch TV. I'll be back in the morning to check on you."

"Well," thought Brandi. "There's nothing to this clinical trial stuff. Just do what you would normally do and then collect five grand at the end of the week. Wheeee."

There was a big flat screen with Netflix streaming, so she spent the night watching a couple rom-coms and then cuddled down to sleep. Sleep came fast, but it was a fitful sleep. Strange images flashed through her mind. The characters in the movies, nude and having sex. Old boyfriends. 

She'd never had sexy dreams before. Never woke up thinking about somebody's cock. Strange, but the hustle and bustle of the morning soon swept the thought away.

The nurse gave her a quick check, Blood pressure, temperature, heart rate. A few deep breaths for the stethoscope, and breakfast was served. Brandi didn't normally eat much breakfast, if any, but she found herself tucking in to two soft boiled eggs, a rasher of crisp bacon and not one, but two pieces of toast. A small bowl of fruit, a mini yogurt and two cups of coffee topped off her meal. 

After breakfast, she felt a little antsy, and decided she needed to take a walk. It took about 2 minutes to walk the entirety of the clinic and then she was back at her room. Maybe Netflix would distract her. She turned on the set and began searching for something to watch. 

"Who was that cute guy in the movie last night? The one with nice abs and butt," she wondered to herself. "Oh yeah. I'll just search for him and see if there's anything else with him in it. He was really hot."

Watching the cameras carefully, Gordon saw Brandi take her short walk, then sit down to watch some TV. Within 20 minutes, she was up again and taking another walk around. This time she made two laps before returning to her room and the movie. As he continued to observe her, he noted that she was fidgeting in her seat. It was like she was sitting in an uncomfortable chair. She was changing her position almost constantly. Sitting on one cheek, then the other, then both. Legs crossed, uncrossed, other leg over, then uncrossed. In addition her hands were never still. Touching her hair, smoothing her clothing, checking her gown, tracing her eyebrows. It was beginning. Time for an interview.

"How are you feeling Brandi? Do you feel like you are experiencing anything out of the ordinary?"

"I don't know Gordon," the confused woman replied. "Normally I can veg in front of the tube for hours, but today, I feel sort of... I don't know, restless. Like I have cabin fever. Like I want to get out and DO something, I just don't know what. It's very strange."

"OH Yes," she continued. "And I had some kind of sexy dreams last night. Naked people. Naked people from the movies I had watched. And... And I woke up thinking of a man's penis. COCK," she blurted the last word. "That's definitely not normal for me."

"Your dreams," Gordon inquired professionally. "Do you recall much of them? You say they were about the actors in the movies you watched can you elaborate?"

"Yes. As I recall it now, they were mostly from the last movie I watched. It wasn't really that sexy a flick, not even soft porn, but for some reason the characters flooded my dreams."

"Can you recall if it was primarily the men or the women who populated your dreams?"

"Hum," she mused. "Now that you mention it, it was mostly the men, Yes. Mostly the men and mostly that Mathew McConaughey. I went looking for other movies of him this afternoon."

Gordon watched Brandi as she spoke about the actor and saw her eyes glass over for just a second. He would have to get back to the tapes from last night and see when that movie had played. It must have been the last one she watched so... Probably 2230h. That meant that it had taken less than five hours for the effects to begin. That was just a bit faster than anticipated, but it was within the expected range. So far, so good.

Brandi watched Gordon making his notes, and thought again about how attractive he looked. He was smart and funny and very professional. Yes. She would like to invite him for more than coffee. A date would be nice. Yes a date. He was looking particularly good today. Very natty. 

Brandi spent the remainder of the day watching TV in her room, but as time wore on she found herself becoming more and more restless. She couldn't figure out what was wrong with her. Why couldn't she just settle down? She would have to ask Gordon when she saw him next. 

By dinner time she was once again ravenously hungry and devoured her chicken pot pie.

"What's wrong with me?" She mused. "I'm going to get fat in here if I keep eating like this every meal." Something else to ask Gordon about.

When Gordon entered the room for his next interview, he noticed that the young woman looked somewhat disheveled.

"How are you feeling Brandi? Anything more to report?"

"Well actually there is," she began. "I seem to have an increased appetite and I'm eating a lot more food than normal. I'm afraid I'm going to gain a lot of weight if this keeps up. I'm also getting more and more restless I just cannot seem to settle down and it seems to be getting worse. Are these the kind of possible side effects you expected?"

"Well yes and no," the doctor lied. "I don't think those symptoms are anything to worry about. How about I order you a sleeping pill, just for tonight, so you can settle down and get a good night's sleep?"

Even with the sleeping pill in her system it took Brandi a long time to drop off, and she slept fitfully through her vivid sexy dreams. 

"Subject reports increasing feeling of restlessness. Sleeping pill has had some effect, allowing her to get some rest," the doctor charted his latest observations.

"What's that smell? Do you smell it?" Brandi said wrinkling up her cute button nose. "I've never smelled it before and I'm not sure I can describe it to you but surely you can smell it. It's very... Interesting."

"Are you wearing a cologne or something?" She asked as she sniffed the air around him. "It seems to be coming from your direction."

"No Brandi," Gordon replied slowly. "This facility is fragrance free because of our research. Nobody is allowed to wear cologne or perfume. I'll make a note to check with the staff."

"Beginning to detect male scent and describes it as "interesting," Gordon wrote in his chart.

"Listen, are we done? I really need to take a little walk or something. I just don't know what's gotten into me but I simply cannot sit still, and that smell has somehow made me even more unsettled." 

"OK my dear. We're done for now. I'll be back later with another questionnaire."

Brandi was out of her chair almost as if it had been on fire. She started wandering aimlessly around the room and then, with a start. headed out the door and down the hall. This time on her circuit of the facility, she tried every door to see if it would open. She really needed to get outside. That smell. It was driving her to distraction. It was sweet and sour all at once, and somehow it was very attractive. She liked it. NO. She loved it.

Wait... What was... Oh God a new smell. Slightly different. Better, stronger, more... What? More... Masculine. YES. That was it more masculine. Why did that smell make her think of men? She continued walking in the direction that made the smell stronger, until she turned a corner and bumped into a janitor. Him... He was the one wearing that cologne.

"Hey," Brandi bubbled. "Gee. You smell really good. No. I mean really, really good. Like almost too good. I know this is supposed to be a fragrance free facility, but I promise I won't say a word if you just tell me what cologne that is. It's driving me mad and I really need to know what it is," the pretty coed begged.

"Sorry ma'am," came the frustrating reply. "I'm not wearing any fragrance at all. Not allowed, as you said."

"OK then," Brandi barked. "If you won't tell me, then just stand there a minute and let me smell you."

With that, Brandi grabbed his shirt and pulled herself close to his neck and took a deep whiff through her nose. It was scintillating. The sexiest thing she had ever smelled. She sniffed again and felt her nipples harden into tight points. God she loved this smell. It was so... Exciting. Another deep inhale. She wanted to lose herself in that smell. To dive into it and drown in it's perfection. She felt a tingle in her pussy as she sniffed again. 

At that instant, Gordon came hustling around the corner. 

"I'm sorry Doctor James," the janitor began. "I told her I wasn't wearing any cologne, but this woman won't stop sniffing me and asking me what I'm wearing. I'm not wearing anything. Really."

"It's OK Harley. My nose tells me that you are telling the truth. I think it must be a side effect of the clinical trial. I'll make a note. Come along Brandi. Let's let this young man get back to work, shall we?"

"NO," came the harsh reply. "NO. I need to stay here. I need to be near him. I need that smell. God. It's stronger now that you're here too. I can't leave. I need it. I do."

"Brandi. I know this is difficult, but you cannot stay here with him. I promise that if you come back to your room, I'll have him give you his shirt for the evening until the side effect passes. OK?"

"NOW. If you want me to go you have to give me his shirt NOW. I don't think I can live without that wonderful smell for a minute. I want it. I have to have it."

"Give her the shirt Harley," Gordon commanded. "You can get a fresh one from the scrubs locker to wear for the rest of the evening."

Harley. Brandi thought the name sounded good. Harley. Nice. Manly. She couldn't tear her eyes away from the sight of him removing his shirt. He still had on an undershirt, but the sight of his bare shoulders and arms sent a thrill through her, straight to her pussy. Strong manly arms. Muscles rippling beneath the skin. God he was hot. When he offered it, she literally grabbed his shirt and brought it to her nose inhaling his scent deeply into her lungs. 

Gordon led Brandi back to her room and sat down with her for another interview.

"I don't know what got into me back there," Brandi apologized. "I've never felt anything like that in my life. There's just something about this smell I'm smelling," and she took another long sniff at Harley's shirt.

"I'm even more restless now than I was before. I just can't seem to settle down. I need to go for another walk," she announced as she stood up. Maybe she could find Harley again. 

"No Brandi. I don't think that's a good idea. I think you better stay in your room for the rest of the night until we see if this side effect passes. We can't have you attacking anyone else. I'll just lock the door on my way out."

"Male scent becoming more attractive. Subject anxiety and arousal index increasing. Personality becoming more assertive. Subject put in lockdown to allow constant observation," Gordon recorded on the chart.

Why couldn't she stop thinking of Harley? Why couldn't she stop smelling his shirt? She needed to get out of here. It hadn't occurred to her initially, but what she needed was a man. At that thought, she could sense her sex opening like a blooming flower. Her lips were swelling, her clitoris becoming erect. She could smell herself now. Smell the musky scent she was producing as she thought of men. Mathew. Harley. Gordon. Gordon? Would that taint the study results? Who cares?


Brandi in Heat



The more she thought about men, the more blood flow to her vagina continued to increase. Her labia were now fully engorged and ready for sex. Massive amounts of estrogen were being produced and pumped into her bloodstream. She needed to get out of that room and find a man.

"Let me out," she cried plaintively, the "me out" becoming almost a feline howl. "Let me ooouuutttt. Please let meeee ooooouuuutt."

Brandi needed some relief. Since she couldn't get out, and there was nobody else there, she stripped and climbed into bed with Harley's shirt. As she inhaled his scent her hands went to work on her body. She began with her breasts. Squeezing and kneading them pulling and twisting her fat erect nipples sending electric shocks directly to her swollen clit. 

Soon her breasts were trapped between her elbows as both hands worked her pussy. Two fingers flew in and out of her sopping wet cunt as another two vigorously rubbed her clit back and forth. It was a little awkward and uncomfortable, but she had never felt such need. Never worked her sex so violently before. In under two minutes, she passed the point of no return and howled her way through a thunderous orgasm. Relief. Blessed relief. She felt much calmer now and was able to drop off to sleep for a while. 

"Subject masturbated herself to orgasm and is now asleep. Masturbation session appeared to be quite vigorous. Male scented shirt used as stimulant throughout," was the recorded observation.

She couldn't take the constricting feeling of her clothing any more. Her nipples stood stiffly at full erection. Her breasts were pinched in her bra. The pressure of her panties almost painful as they stimulated her engorged clitoris with every step. She was naked under her hospital gown when breakfast arrived. It was delivered by a male orderly. She smelled him the instant he entered the room.

"God you smell good," she enthused. "Can I just come over and smell you for a minute? Please just for a minute."

It hadn't been difficult to hire a male escort to play the part of the orderly. He had specific instructions not to make any advances toward the subject, but to accept any advances that she might make, up to and including any offering of sexual relations. 

He'd encountered some strange sexual behaviors over the three years he had been an escort, but this was really a bit weird. This nearly naked woman was almost inhaling him in through her nose. He'd been clearly instructed not to wear any fragrance at all. Even stranger, he had been told to wash last night with unscented body wash and then not to wash again until after the gig. Yet this woman said he smelled really good and was clearly enjoying sniffing him. He new that this was a clinic of some kind, and the doctor had said the woman he was to serve breakfast was undergoing a clinical trial of some sort, but the whole thing seemed more than a bit strange. A bit strange and yet, somehow arousing. 

"Hmmm. Thanks for breakfast," Brandy cooed. "It looks delicious, and so do you."

She was now rubbing her cheek against his bicep, starting near her nose as she inhaled and then pressing back towards her ear as she exhaled. It made him think of the way his sister's per cat rubbed against his legs when he went for a visit. When she alternated cheeks, he thought she had read his mind. The whole thing was bizarre but somehow he was becoming increasingly aroused by this woman's advances

The smell of the orderly was intoxicating. Better even than Harley. Brandi couldn't resist trying to rub some of that scent onto her skin for future enjoyment. Good God she was feeling sexy. After rubbing both cheeks repeatedly on his muscular biceps, she began to increase the contact area by rubbing more of her body against his. It felt so good to have his strong firm body rubbing against her soft willing one. Her sexual need was increasing the longer she worked on him. She couldn't resist reaching down to his crotch.

"Oooooo," she thought as her hand pressed down onto his cock. "He's getting nice and hard for me. Oh I want some of that, and I want it right now."

Turning her back to the orderly she parted her gown to show him her bare behind and back. Backing into him she began to rub herself up and down the front of his clothes. She could feel his big bulge tenting his pants to push into her naked butt. She couldn't resist pushing back even harder against his manliness. It just felt so right. So good. 

Suddenly Brandi spun around to face him and started to undo his pants. In seconds she had his hard throbbing dick in her hand. The smell of his naked sex drove her to a new level of arousal as she sunk to her knees and buried her nose in his pubic hair. 

"Oh. My. God," she enthused. "I've never been this aroused before. Never been this out of control. I feel like such a slut, but somehow I need you to fuck me. Need you to fuck me right now."

"Should I put on a condom?"

"NO. NO. No condom," the wild woman replied. "I want you and I want your cum. I don't know why but I need your cum in me now forget the fucking condom and fuck me. Fuck me NOW."

It was a golden rule of his that he never fucked a woman without a condom. Pregnancy and disease were a very real and present danger in his profession, but the doctor had had him tested and had shown him the tests he had done on her and they were both clean so ...

When he looked back down she was on her hands and knees, pulling her delightful butt cheeks apart to display her swollen sex and he did a double take. Her entire pussy was swollen and flushed with blood. He had sexed a lot of women, but he'd never seen a pussy that looked like that before it had been thoroughly fucked. Her juices were literally running down her inner thighs. Both her inner and outer lips were engorged with blood and appeared almost bright red. She was making little mewing, pleading sounds as she thrust her butt back towards him.

Brandi dropped to the floor. Head down, ass up. She needed him to stuff his big dick in her needy pussy, and she needed it now. She couldn't stop herself from making these little vocalizations. God damn why wouldn't he just fuck her already?

"Humm. Hmm. Mmmm. Please fuck me," she pleaded. "Don't you want to fuck me. I want you to fuck me. I need you to fuck me. Get down here and fucking FUCK me NOW."

"OK. That seems clear enough," he thought as he dropped to his knees behind her. "That's as clear an invitation as I've ever had so I'm in."

As that thought passed through his mind, he pushed his stiff thick cock directly into the entrance to Brandi's proffered sex. She was so excited, so sloppy wet, that his long penis slid easily balls deep on the first stroke.

When she felt his rigid dick at her entrance, Brandi couldn't help but push back against it. Her whole world was centered on her sex and at that instant she would have chosen sex over breathing if it had come to that. She had never felt the need like this before. Never needed to be filled so badly. She felt her pussy swallow his whole cock in one stroke and it thrilled her that he was inside and thrusting.

But he wasn't thrusting either hard or fast enough to suit her. Soon she was rapidly rocking her ass back towards his groin. Making repeated hard thrusts against that wonderful tool if his. She was so hot. So wild. So out of control. She'd never experienced anything like this. The intense need. The overwhelming desire. But somehow she knew that there was a need for more than just this.

"Cum in me," she panted. "CUM in me. Squirt it in me. Deep in my pussy. Squirt it in me. Cum for me Cum. C'mon... C'mon... CUM NOW."

He'd had some enthusiastic partners over the years, but this was miles over the top. This woman was out of control. Totally insane for his cock. Almost on cue, he shot a huge load of jizz deep into her willing body. This was followed by a series of additional ejaculations of lesser and lesser intensity until he was empty.

When she felt him shoot deep near the entrance to her womb, Brandi shuddered. There was no birth control. That fleeting thought was swept away by the intensity of her own orgasm. Rising to mountainous heights, she fell off the cliff into a shaking squealing mass of flesh. She had never felt anything so wonderful in her life as the orgasm swept through her like some kind of tsunami of pleasure. She lost complete control of her body and lay there as spasm after spasm wracked her entire being. Even the aftershocks were monumental. 

As she slowly returned to planet earth, she realized with some shame that she had just had sex with a complete stranger. Worse yet, she had had sex without any form of protection whatsoever. What had come over her? Was this another side effect? She began to regret her participation in the study and wondered if the money was anywhere near enough to compensate her for enduring these side effects. But when the endorphins kicked in, she felt a calm descend over her that made everything seem insignificant.

"Subject initiated sexual contact with first male. No apparent inhibitions. Subject was attracted by male scent, nuzzled the male then presented herself to be mounted. Sex appeared to be high intensity after which subject appeared to be calm and relaxed."

By lunchtime, Brandi was once again feeling anxious, a bit nervous, and more than a little restless. Unable to sit still to watch a movie or read a book, she paced her room, like a trapped beast.

"I wonder if Harley is at work today," she thought to herself. "I wonder if he always works in that same area. I bet I could find him if this damn door wasn't locked."

Having been calmed by her encounter with the orderly, she hadn't tried the door yet this morning and when she did she found that it had been left unlocked. BONUS. Slowly she opened the door a crack and peeked out. Nobody. Quickly she slid through the opening and began to walk down the hallway. She could smell it. Just a hint, but she had it and as she passed a cross hall, it got stronger. Stopping, she turned and took that hallway following the increasingly strong smell.

"Hi Harley," she bubbled as she turned another corner and came face to face with her prey. "I was hoping I would run into you."

Before he could say anything, Brandi grabbed him and dragged him into the men's room he had just left. Once again, she was overcome with lust and need and she turned her back to the startled man and began rubbing her bare skin against him. Reaching back she took his hands in hers and pulled them onto her tingling breasts. 

"Feel me Harley," she panted. "Feel my tits. Squeeze them. You like my tits Harley? Do they turn you on? C'mon Harley. Don't be shy."

Returning from getting a coffee, Gordon was surprised that he didn't see Brandi on the room monitor. Thinking she must be in the separate bathroom he sipped his coffee and waited for her to emerge. After several minutes he began to wonder and decided he's better check on her. 

"Probably in there masturbating herself," he thought. "She should be starting another cycle of arousal any time now."

When he got to the room he was stunned to find the door unlocked. His fears were confirmed after a quick check around. She had escaped. She was in heat and on the loose. There was no telling where she might have gone. Or who she might be soliciting for sex right now. He could put the whole facility in lockdown, but then it hit him. Harley. She had a strong attraction to the janitor and she seemed very sensitive to his particular scent. Where would Harley be now?

It was impossible for almost any man to resist her and Harley was no exception. He looked down into her dark smiling eyes as she took his rigid cock into her mouth and sucked him down. He had been sucked before, of course, but this. This woman was wild. Sucking and kissing and licking. Groaning and mewling the entire time. 

"Mmmmm. Huhmmm. Don't cum Harley. Huhmmm. Just let me get you really hard and ready. Uh uh. Mmmmm. Don't you dare cum until you are fucking me."

Then with a wet smacking of her lips, Brandi pulled her mouth off his stiff thick cock and dropped to the floor, presenting her swollen drooling pussy to be drilled by the lucky janitor. He didn't hesitate, simply dropped to his knees behind her and lined up his cock with her hole. He couldn't believe how needy she was. The instant his cock had entered her, she had pushed back as hard as he was pushing forward and soon she was writhing and screaming as she ground back into him. 

Brandi was in heaven again. The moment she had felt him enter her, she had pushed herself back hard into him, causing his hard cock to bottom out near the entrance to her cervix. It felt soooo good to be impaled like that. To have a thick hard cock stretching the walls of her pussy as she ground down on it. She squeezed the muscles of her sex hard to grip him and kept pushing back. She didn't care if he ever stroked out. All she wanted was to have that thick pole filling her needy pussy. She pushed herself back harder and began a twerking motion. 

"OH YEAH. That's the ticket," she squealed. "C'mon Harley. Don't hold back. Fuck me . FUCK me. FUCK me NOW!"

Past the point of no return, Harley complied to the best of his ability. Grabbing her hips to provide him a modicum of control, he began to piston in and out of Brandi's soaking wet sex. His cock was in a wet velvet vice. He had never had a woman squeeze him so hard with her sex, and it might have been an issue if she hadn't also been producing such a large amount of natural lube. His thick cock slipped easily in and out of her increasingly tight hole.

Suddenly he felt the walls of her pussy begin to pulse rhythmically around his shaft and knew that at that instant she had begun to climax. This pushed him over the edge towards his own orgasm. 

"I'm gonna cum baby," he gasped. "Do you want me to pull out?"

"No... No... NO DON'T. Don't pull out. I want your seed. I need it. Please. Please. Cum in my pussy. Cum in me. And that's exactly what Harley did, right then and there.

Satiated and somewhat embarrassed by her behaviour, Brandi wrapped her hospital gown around her naked form as best she could, and slipped out the restroom doors. 

When Gordon saw her bustling along the hall he breathed a sigh of relief. She hadn't gotten out of the facility. That was a godsend. But as he looked closer, he could see that she had a soft glassy look on her face. In his teens he might have referred to it as the "fresh fucked look". That quiet contented look that someone gets when they have enjoyed the release of their sexual tensions. 

"Hi Brandi. I was just looking for you. You're not supposed to be wandering around alone during this phase of the trial. We need to keep constant vigilance for side effects. Here. Let me escort you back to your room. Where were you anyway?"

"Just talking to Harley," came the dreamy reply. "I just wanted to talk to him to... Apologize for my behaviour," she continued her lie.

Gordon could tell immediately from her relaxed demeanor that Brandi had been bred recently and now he knew who it had been. He would need to have a chat with Harley and make sure his discretion was assured. Thankfully the data indicated that there would only be one more cycle before the effects began to diminish. Surely he could keep control of this one woman for that long. 

Back in her room. Brandi tried to relax with another movie, but she kept thinking back to her encounters with the orderly and the janitor. It was so unlike her to be so sexually aggressive. Flirty? Certainly. Slutty? Sometimes when a little drunk. But never ever had she so aggressively pursued a man, let alone two different men and been so demanding of them sexually. Not to mention that she had broken her condom golden rule: "No glove. No love." She needed to talk to Gordon about these rather uncontrollable urges. If these were the side effects, she owed it to him to make sure he knew about them. She needed to tell him about the urges, but not about her indiscretions.

"Yes. Yes I see," replied Gordon during their next interview. "I appreciate your concerns. We have already decided that we need to make a slight modification to the serum. But in reality, If a woman is already in a relationship, then surely if her libido is as increased as you indicate, then she will seek out sex with her partner, and if they are trying to conceive, then that is not all bad and may in fact be a positive, as I see it anyway."

This all made sense to Brandi, but she was not in a committed relationship and she had been acting a total slut, attacking and fucking two strangers since she had been here. She hadn't told Gordon about the sex. It was none of his business really all he needed to know about were the urges and she had made that part abundantly clear.

"I would feel much better if you locked me in again," Brandi announced. "I'm feeling calm and relaxed now, but I'm not sure that's going to last and I don't want anything untoward to happen," and then added to herself, "again." 

"Subject is aware of the increased sexual drive and need and is unable to resist sexual contact. Olfactory triggers are primary, visual somewhat less so. Between arousal cycles, subject is lucid and sufficiently rational to have asked for voluntary lockdown."

That night Gordon poured over the recording of Brandi and the orderly, cursing himself once again that he had been unable to observe or capture for study her session with Harley. He had interviewed Harley at length and knew pretty much the sequence of events, but that was just not the same. Harley was a janitor and not a trained observer. There were undoubtedly innumerable details he had missed.

It was becoming increasingly difficult for Gordon to remain detached about his subject. As he watched the tape yet again, he noticed that Brandi was a rather aggressive and talented lover. It would be incredible to have sexual intercourse with such a beauty. As he daydreamed, he thought about how she had looked coming down the hall after Harley. That dreamy look on her pretty face. Her full ripe breasts wobbling loosely under her gown. Her hips swaying enticingly as she sashayed along sniffing the air.

He had missed one observation and needed to make sure that he could get a close look at what was likely to be the last one of the week. If only there were some way to be in the room with them. To experience the sights sounds and smells first hand. He became hard in his pants as he watched her attacking the orderly and thought about how hot it would be to have been in the room. 

The idea crept up on him slowly. He couldn't really place when it first seeped into his consciousness, but eventually it did make itself known. Of course he could get better observations. He could get them first hand. He had to make sure that Brandi stayed secure until he had a chance to meet with Harley in the morning. His calculations indicated that her need would be reaching the next peak later that day. He needed to be ready.

Gordon had no problem finding Harley and getting his shirt. He simply told him he was going to sample it with the gas chromatograph to find out what had caused Brandi's reaction. All part of the clinical trial.

What he did instead was to put on Harley's shirt and rub it onto his skin. He paid particular attention to the neck and armpit areas. Of course it would have been better if he could have worn the shirt for the interview with Brandi, but it would have raised too many questions. No, this would have to do. 

He continued to wear the shirt as he monitored Brandie's behaviour for signs of her next arousal cycle to begin. Tempted to rush, Gordon had to restrain himself until he could see her constantly wandering around the room and repeatedly trying to get out the door. Two hours later, he changed into a clean shirt, turned off the video surveillance and headed to her room for the interview.




Brandi in Heat



Brandi could feel the restlessness building within her. She was glad to be locked in the room, because she knew what would happen if she could get out. That didn't stop her from trying the door every few minutes anyway. There were men out there. She could hear them and she could smell them and it was making her even more antsy. Once again, the friction of her clothes had become unbearable and she was naked under her hospital gown. By the time Gordon arrived, she didn't care what would happen, she just needed to get out and find them.

She almost slipped past him as he tried to enter the room. But when she caught his scent, she stopped dead. Gordon smelled... Different now. Not the weak scent from before, but a stronger scent reminiscent of Harley. Brandi's intentions of escape were trampled by the need to bathe in his scent. She inhaled deeply as the door closed. 

"Oh Gordon," she sighed. "You smell sooooo gooood right now. Can I just smell you a little? Please?"

Of course it wouldn't have mattered what he said, Brandi couldn't stop herself from rubbing her face and shoulder against the man. She sniffed his collar and chest as she rubbed her cheeks over his shirt. Funny, but the shirt seems to be blocking the scent this time,. Not holding it. 

"You need to take off your shirt," she commanded. "Here. Let me."

The aroused woman's hands began to unbutton him before he had time to react. The instant his naked chest was available to her she began to rub herself directly on his bare skin. First one cheek as she inhaled deeply, then the other. She could feel her body beginning to respond. Blood rushing to her groin preparing her for the sex she so desperately needed. The walls of her vagina began to produce copious quantities of lubricant, readying her for the penetration she so badly craved.

"Brandi," the doctor began. "This is not appropriate behaviour. I must ask you to stop."

"I must ask you to stop, but I don't want you to," he continued to himself.

"Heeoomm. It's your smell. Mmmmoh. You're different than before. Hhhmmm. It's so good. So exciting. Just let me rub against you and smell you for a bit. OK?"

Of course it was OK. It was working. She was making the advance. Her obvious arousal and fawning actions made him stiffen in his pants, a fact that did not go unnoticed by his subject. 

"Here," she huffed. "Let me get this shirt all the way off."

Naked from the waist up, his entire torso was available to her. She immediately began rubbing her hands and face on him as she made soft mewling sounds. Soon she had turned her back to him and was rubbing her bare back up and down his chest and pressing her bare buttocks back against his erection. Although he had expected her to be excited by his scent, he'd had no idea that her actions would arouse him so much. He'd never been so excited by any woman before.

"Hmmm. You're so hard," Brandi whispered in his ear. "Let me take it out for you. Let me touch it for you."

Gordon could not refuse her request and taking his silence for permission, Brandi opened his pants and pulled them down to his ankles. Face to face with his manhood, she opened her mouth and took him in deep. One slow deep sucking stroke which pulled even more blood into his already engorged member and she was gone. Somehow during that maneuver she had removed her gown. Standing again she rubbed her entire naked body against his. Turning this way and that. Pressing her naked ass directly onto his stiff cock. 

"Brandi," he gasped. "This is inappropriate. I cannot allow this. It is totally unprofessional of me to be standing here with you like this." But the quiver in his voice revealed his true feelings.

"Oh FUCK your professionalism, and then fuck ME." she howled. "I won't tell anybody. I promise. But if you don't fuck me, and I mean right now, I'll scream bloody murder until someone comes and then I'll escape to find Harley while you explain why we were both naked. How's THAT mister professional?"

Her aggression stunned him. Clearly he would have to add some form of sedation to the serum in future. Not too much though. Part of the attraction was that the women aggressively seek sexual relations with the men they desired. A slap to his face returned him from his reverie.

"Did you understand me doctor?" Brandi said in a rather condescending tone.

When he returned to the moment he saw Brandi on her knees again. Her head was on the floor her ass high in the air, presenting her swollen and red vagina to her intended mate. Him. 

"I said fuck me and I meant it. Get down here and fuck me like you've never fucked anyone before," she growled. "FUCK ME NOW."

Shocked into action. Gordon dropped to his knees and lined up his stiff cock with her sopping sex and then, without preamble, pushed all the way in. It was, in a word, glorious. Her sopping wet pussy swallowed him whole. It was hot. Hotter than normal body temperature. 

"Feline body temperature is 3 to 5 degrees hotter than human." The fact passed through his mind before the intense sensations swept it away.

Brandi was, almost literally, on fire. She was growling and howling and pressing back against him as if she wanted his entire body to be swallowed up by her inflamed pussy. Normally a quiet and gentle lover, Gordon returned her enthusiasm by pounding her as deeply as possible. He repeatedly slammed his hips into hers as he drove for maximum depth and speed. She was begging him to go faster. To push harder, To go deeper. Clinical observation would have been a poor substitute for this type of first hand experience. She was a wild woman and she was turning him into a wild man.

"Cum in me... Cum in me... Cum in me," Brandi begged with every thrust backwards against his groin.

Gordon grabbed her hips and held her ass tight against his belly as he began to shoot his load into the begging woman. He couldn't remember ever being so sexually excited. Spurt after spurt erupted from his cock as he filled her hungry pussy with his seed. What was it about her? What made this soooooo much better than any sex he had ever had? As he began to calm down after his peak his rational clinical brain began to function again.

Pheromones! YES! That must be it. Not only had she been in heat, she had exuded a female pheromone that excited her partners into a similar sexual frenzy. This was an amazing discovery and well worth the risk of having participated in the sexual activity himself. He needed to run another trial. Needed to find out what this pheromone was. To duplicate it. To synthesize it. Perfume companies would pay hundreds of millions. 

Brandi had returned to some semblance of normalcy after her breeding. 

"Why had she done that?" She wondered to herself. "Gordon was OK, but not great. The sex had been pretty good though, all things considered."

An awkward period followed the completion of coitus.

"Well Brandi, I guess I better get back to my research," Gordon gushed. "Th... Th... Thanks for the..."

"Yeah. Good. Yeah. You go back to your research and address those damned side effects," Brandi replied, not quite angrily.

The remainder of her stay at the clinic had been rather uneventful. She had returned to her old self. Able to veg in front of the TV for hours. Able to lose herself in silly rom-com movies without obsessing about the male actors. At the end Brandi had collected her fee and been happier for it. But somewhere deep inside, she wondered at what had happened to her. 

It was about 28 days later when she began to feel a bit unsettled. Restless. She had felt these feelings before. Last month in that clinical trial. She needed to get in to see Gordon right away. To find out what was happening to her. Surely Gordon would have mentioned if there were some possibility of a recurrence of symptoms. She made a call to the clinic, but Gordon was out so she left a voice message.

Gordon listened to Brandi's message a third time, hardly believing what he was hearing. None of his projections had taken in such a large time frame. He had never considered that the serum might have longer lasting effects than the first cycle. This was important information, but even more, he had to get Brandi isolated, and quickly. He needed her in the clinic for observation. Not to mention that if she were allowed out, there would be no telling what kind of situations she might encounter. What kind of men she might attack. When he called, he got no answer. 

By late afternoon she was beginning to feel really antsy and, since Gordon had not returned her call, she decided to just go on down to the clinic and see if he would see her right away.

Dressing quickly, Brandi left her bra in the drawer. It pinched and rubbed her swollen nipples too much anyway. As she walked down the street, it hit her like a slap. That smell! Oh, it smelled so good. Where was it coming from? She needed to get to it to bathe herself in it. Just that smell made her pussy start to flow like a river and her nipples poke obscenely through her top. 

As she glanced around her, she noticed two large construction workers standing outside a coffee shop. One or two quick sniffs told her that she needed to move in that direction, and as she did, the scent gained intensity.

"My my," she thought. "They look so big and strong. Wide shoulders over broad chests. Flat stomachs with just a hint of the six pack abs underneath their tee shirts. Their large biceps flexing as they raised their cups to their lips. Hmmmmm. I have to get closer. GOD DAMN. They smell even better than Harley." She decided that Gordon would have to wait.