Max tipped the serum into his mouth without hesitation. In three gulps it was gone, and he dropped the bottle cap onto the table with a clatter.
“Your first dose,” Vanessa remarked, sounding strangely pleased. “So? Feeling bigger yet?”
“Ha… not really.” He’d been expecting some kind of reaction, a tingling sensation maybe, or a warmth spreading through his body. But he felt nothing out of the ordinary. “That was kinda anticlimactic.”
“Like I said, it’s going to take a while to start having an effect.” She reached down and plucked him off the table. “My advice? Don’t worry too much about your size. Just concentrate on your job – that is, sniffing up all my farts – and make sure you earn your serum every day. Staying focused will make the time go quicker, and you’ll be growing before you know it.”
“Right…” Max nodded slowly, even as Vanessa’s hand carried him around her back. He looked down to see her jeans and panties being pulled open, and within them that familiar sight; two gigantic, pale, fleshy globes, and the stinking abyss between. His home, for the foreseeable future.
“Sniff your best, bug. Remember, it’s in both of our best interests.”
When she released him, a fresh fart was waiting to welcome him inside.
*
For Max, the following days were a hazy, smelly blur. His life became dominated by stink. The earthy scent of Vanessa’s unwashed ass, the acrid butt sweat that dripped constantly down her cheeks… and of course, her farts. Nearly all of his waking moments were consumed by gas. If he wasn’t inhaling a fart directly, or reeling from the foul aftermath of one, he was mentally preparing himself to absorb the next.
It was never a long wait.
FFRRUUPP
“Ugh!” He grimaced, forcing himself to breathe the cheesy wind. That was the omelette she’d had for breakfast a few hours back. Surely lunch couldn’t be far off?
Max had quickly become dependent on the few short interruptions he was allowed. Three times a day, he was freed from the goth giantess’ booty for a bathroom break and a meal. A drop or two of water and a few crumbs of whatever Vanessa happened to be eating were more than enough. With dinner she would also provide Max’s growth serum, which he accepted eagerly, looking forward to the day he’d be too big to fit inside her panties.
If he was being honest, there were days when Max wasn’t sure he’d really earned his serum. He always tried his best, but facing farts so powerful they blasted him back into the seat of her underwear, so hot they stung his eyes and scorched his throat, and so smelly that one whiff filled him with the urge to vomit… sometimes he had no energy to do anything but lie back exhausted, even if it meant letting her gas wash over him and leak away.
Yet still Vanessa would provide his medicine, unfailing. Even on the day she ate curry for lunch, and her farts were so spicy they knocked Max out cold. He must have been unconscious for hours and missed dozens of farts. But she’d pulled him out that evening and given him his serum all the same.
“Maybe she’s kinder than I give her credit for,” Max smiled, remembering. He decided once he was back to normal size he’d get her a gift to show his appreciation.
BRRRRUUPPPP
For now, though, he had sniffing to do.
*
Days became weeks. Max slept, and sniffed, and drank his daily serum. He had yet to grow any larger, but he had noticed two other changes in himself.
The first was that he was getting better at absorbing Vanessa’s farts. Not because they were any less rancid – in fact, he had a feeling she was now deliberately eating foods that gave her worse gas – but through repeated exposure his ability to endure them was improving. He could sniff longer and deeper than he used to, and held in his gags with greater success. These weren’t skills he was particularly proud of, but they did make his job and life easier.
The second change was harder to pinpoint exactly. Max felt almost as though he was… losing himself, somehow. Slipping away. Sometimes hours would pass by without him realising, as if he’d been breathing her gas on autopilot. More worryingly, occasionally he would forget how he’d even gotten into this position, trapped in a giant ass sniffing farts, and it would take several minutes of concentration to remember who he was and what he was doing this for.
Maybe it was just an effect of his environment. Vanessa’s ass was dark, hot and smelly, and the duties he performed for her were difficult and repetitive. “Anyone would fall into a rut down here,” he rationalised. And yet…
Increasingly Max was feeling a strange sense of attachment to Vanessa’s butt. Almost… belonging. It was a ridiculous idea – how could anyone want to stay somewhere so disgusting, being essentially tortured by gas every day? But it had been his home for some weeks now. And he couldn’t deny that whenever Vanessa picked him out from between her cheeks for a meal, he felt something uncomfortably close to reluctance.
Suddenly there was movement. “Speak of the devil.” Max’s giantess captor reached down her panties to seize him by the waist. Her hand moved to pull him out, but seemed to hesitate a moment – then shoved him forward instead, mashing him against her pale pucker.
FFRRRAPPPP
After another minute of massaging him into her ass, ensuring he absorbed all her stink, Vanessa drew Max out and up toward her face. He blinked in the bright light while enjoying the chance to breathe fresh, clean oxygen.
The goth was sat in her room by the window, her favourite place to read. “Hey there, bug.” She greeted him. “How’s my ass smelling this morning?”
Max thought it best not to answer that question. “M-morning, Vanessa,” he replied. “Um… is it time for lunch already?”
“It’s not even eleven yet. Try to use your little male brain.” She flipped her hair back. “I just had some interesting news to share. Hazel called me, the manufacturer of your growth serum. She’s made a tweak to the formula.”
“Really? Does that mean I’ll start growing faster?!”
“No. Don’t interrupt.” Vanessa snapped. “The tweak is designed to affect your digestive system. Basically, your body will now get all the nutrients it needs to survive from consuming my ass sweat, as well as any debris you pick up while licking back there.” She smirked. “Congratulations. You are now literally a bottom feeder.”
Max was horrified. “W-what about normal food?”
“You won’t get any. Why should you? Starting tomorrow, you’ll have no more breakfast or lunch breaks, and I’ll just take you out once in the evening to give you your serum.” She inspected her nails disinterestedly. “Anyway, just thought I’d let you know. You can get back to sniffing my farts now.”
“Wait!” Max protested, as her hand began to lower him. “Can’t we talk about this?”
“You can talk to my ass. It has something it wants to say to you.”
BBOOOOOFFFF
Max was submerged back between Vanessa’s giant cheeks just in time to catch a rank veggie-scented blast to the face. He sniffed it up diligently, focusing on his job in order to avoid thinking about how life in this giantess’ butt was about to become, somehow, even worse.
And more so, to avoid thinking about the disturbing sense of relief he’d felt being returned to it.
*
Max could no longer tell how much time had passed since he’d shrunk. Time had lost most of its meaning. His world had been reduced to the space between a goth giantess’ ass cheeks, and that world was largely unchanging.
Well, it was quite a bit sweatier than usual right now. That was a kind of change. Fat beads of perspiration trickled down Vanessa’s cheeks like raindrops on a window, filling the already foul air with a salty, dirty scent. He considered lapping some up, but he wasn’t particularly hungry. And there was hardly a shortage of the stuff.
A low rumble sounded from deep within Vanessa’s body. “Oh, that’s going to be a big one.” He had learned to tell from the sound alone. He sunk his limbs into the booty flesh surrounding him, bracing himself for the moment of impact, and prepared to fill his lungs with hot gas.
PHHHRRRRROOOPPT
It was a true monster of a fart, prolonged and violent – still nothing Max couldn’t handle, ordinarily. But at the exact moment the gale-force winds bombarded him, Vanessa’s body shifted. His grip came loose and suddenly his whole body was sliding, rolling backward, his hands unable to find any purchase on her sweaty, slimy ass cheek. Before he knew it Max had slipped right out of Vanessa’s panties, bouncing his way to the outside world.
“Shit!” He gasped, scrambling to his feet. This was bad! He had to hurry back… back inside her ass, so that…
Wait. “What am I doing?” Why was he so desperate to return to his prison?
Max paused to look at his surroundings. It was night, and he was in Vanessa’s room. She was lying in bed snoring with the covers half kicked off. He must have fallen out as she turned over in her sleep.
He sat down on the bed, crossing his hands over his knees. This was his first taste of freedom in… he didn’t even know how long. And with Vanessa asleep, he could enjoy it as long as he wanted. So why had his first instinct been to rush back to captivity? Why did some part of him, even now, yearn to go back inside?
“My name is Max,” he whispered to himself. “I’m a student at Ventus University. I was shrunk at a sorority party, but a woman named Vanessa took me in. I sniff her farts and in return, she gives me a growth serum every day.”
That was right. This was just a temporary arrangement, and he’d soon be back to his normal college life. He remembered Vanessa saying it should take a few weeks for him to notice a difference in his height. How long had it been now?
He walked over to the bedside table, and Vanessa’s phone. After a few attempts he managed to push the home button with enough strength to make the lock screen appear, flashing the time and date.
02:04
14th February, 2025
Max stared at the screen. Even after it had faded to black, he stared. “February..?” But that wasn’t right. That couldn’t be right. That was almost… six months, since he’d shrunken? Six months of smelling farts and licking ass-sweat? He hadn’t spent half a year of his life worshipping a giantess goth’s asshole, had he?
And what about his height? “How can I still be tiny after so long?” Had he grown at all? Oh god… was he the exact same size he started at? No! That was impossible! The serum he’d been drinking – six months of taking it every day, with no change whatsoever to his height? Then what had it been doing to him!?
Max began to panic. His corrupted, fart-addled brain was struggling to piece it all together, but he knew something was very wrong. One thought at least came clearly. “I have to get away. Before it’s too late.” He would take his chances with another Juno, or anyone else who happened to find him. Anyone had to be better than this.
He walked to the edge of the bed and looked over, judging the best way to descend. As he stood there, a long, low sound reached his ears.
POOOORRRRFFFFFFF
Vanessa sighed with relief, unclenching her ass as a pungent, overpowering stink filled the room. It reached Max in a matter of seconds, settling in his nostrils, thick and heavy. He sniffed at it by reflex. “Lentil beans, broccoli, onions… ugh… spinach…” Definitely one of her worst. But familiar. And somehow, calming.
The foul scent was everywhere, smothering him. He took a step toward it. The stink filled his head, so rich it left no room for other thoughts. Something had been stressing him, he vaguely remembered… something unpleasant… ugh, he couldn’t focus on it. Not when there was sniffing to do.
All other thoughts and feelings were washed away beneath the scent. Max blinked, looking around in confusion. What was he doing out here? He must have fallen out of Vanessa’s ass as she slept. “I’d better hurry and get back inside!”
He sprinted back toward her, unaware that his last chance at freedom had just escaped him. He would never have an opportunity like this again, or the mental strength to take advantage of it. The last vestiges of his old self slipped away. Max was now, truly, Vanessa’s slave.
“I’ll wedge myself in deeper this time.” He thought as he returned to his home, nestled between her cheeks. “That way, I’ll never fall out again.”