Trashed out

Mari woke up from her nap as the speakers blasted her name. "Mari from floor 7B, please report to the waste disposal area for selective cleanse duty. Repeating, Mari from floor 7B has been picked for selective cleanse duty to take care of today's waste disposal operations. Be there and comply with our strict regulations for disposal in 40 minutes." She wiped a bit of snot from her nose, brown hair messily pulled out of her face as she looked up and grumbled. Cleanse duty.. that was the third time this month. With several hundred employees in this facility she'd have thought that she'd be picked less. Lousy higher ups trying to make budget cuts. She walked out of her security room and down the halls, taking the elevator to the garage, the disposal chute was right next to that. Even with 40 minutes, her lunch was up in 15 and she didn't want to choke halfway - or worse, swallow and have to puke out her food with the smell of rotting radioactive sewage and putrid who-knows what, swear to god, just because of some arbitrary lottery.
The elevator dinged. Walking out, she approached the chute over at the end - all she had to do was carry it from the garage to the disposal plant just outside the base. A separate facility had the proper equipment to deal with it, she'd let those low, err, lower drudges take the time and effort to deal with that. As she walked up to the chute, already the foulest smell imaginable, reeking of trash, chemicals and synthetic materials plugged up her senses. She looked to the side and grabbed two rubber wrist-length gloves from the dispenser. These were, way too thin and not nearly far enough for her comfort, almost begging for her arms to get soaked in chemical sludge. Pressing a button on the side, the seals released on the rubbery, tight and sealproof plastic material holding the current mass in. She quickly grabbed the handles of the 'bag' like holder and tied them together, a tiny valve at the bottom connected to a pipe. She unscrewed it, green and grey sickly drips already leaking, here it comes she thought. With a pull of a lever, she lifted it, plopped the valve open and then let it sit on the pipe proper before the suction began. Of course the solid chunks wouldn't go down, but atleast all the icky fluids and seepage would go down. When it was finished, she pulled the lever back, again lifted it and shut the valve. Tying the holder even tighter, she hoisted it over her shoulder and got moving.
The separate treatment facility was a good block from the main building, it was a short walk but if she took her time she'd be cutting it short into her lunch break. The red ribbon sealing the tied knot of the golder brushed against her face, and the more she carried the giant bag over, it's strangely taut, tight sagging material seemed to sink and gently melt over her back, or so it felt like. Chunks of plastic and disposed food, chemicals and radioactively-treated materials, disposed labcoats and well, basically just garbage. She put off the thought of herself as a garbagemen, despite the material weighing further, pressing deeper and deeper onto her spine and sinking ever further, it almost felt like it was going to fall thru the holder and into her flesh itself, giving off a cold, damp shuddering feeling of plastic overtaking her. And yet it was oddly, consoling? The stress of the rubbered holder's fabric folding over her curves and form, the texture running against her body, like a giant sleeping bag. A strange thought, for something that smelled so disgusting. She gave a coldly relaxed sigh, as she heard a large ripppp squeal out.

Mari panicked.

She had gotten way too comfortable there. Pulling it with a sudden twist around to her front, Mari saw a small, incredibly tiny tear. Much smaller than that cacophony of trash spillage would've had her believed, she held it up curiously when slowly something cold and slimy started to drip out of her head. "Hmm? Oh just great.." She fingered the grey goop from her forehead, her hair now damp with the material, she felt similar seepage had spilled on her back in the process. "Hmm?" With a squint, the grey substance seemed to turn silvery, and then danced on her palm, spinning around her wrist and arm next. What exactly could've been in that trash? Besides the usual dangerous trash and useless trash, wasn't there some kind of announcement about a breakthru in nano-research?
 She didn't know, but she thought she was going insane as the silvery shiny material spread like wildfire, multiplying and eating thru her blue long-sleeve shirt and dark leggings with utter acidic ease. Worse, the scariest part was it seemed to be coating her clothes and, converting it, making it into more shiny, plastic-y film and becoming a part of who she was. It did the same atop her skin, spreading and spreading, she saw her limbs start to bloat out. Uptop her face was slowly pressed against by the disturbingly soft, wrinkly material until it squeezed so tight, it merged with her features, turning her face and even hair into a living trashbag like the rest of her body. "Oh what the hell! This is just, eww ew ew.."
A rank, horrid smell went out of her trunk right as she felt it inflate.
She stumbled a bit, feeling chunky and disembodied inside. Her organs rearranged into, well trash! As her skin finished stretching every inch of her into a human trash bag, she felt her cellulite and love handles float freely, her body not quite solid but easily sounding of waste. Her skin, baggy and stretched, tucked around blocky shapes started to release more of the stink, she just wanted to go home. The more she smelt it, the more the air in her.. trash? (She didn't know if she had lungs anymore) Well the more it released, even her mouth smelling like a wasted dirty toilet. Her head got dizzy, held back by fear until it turned into an airry high octane haze. Both of her cheeks bloated, chunky filth and drek, disgusting swill swimming inside her head and overpowering her brain.
Mari looked down, she was now standing practically 9 feet as she wobbled a top shaky ground. Her body jiggled and jumbled, smelly gross trash emitting a nauseous dominating aura of stank out her breath and orifices, especially her sexual bits. "No, n-no this cannot be happening.." Her breath almost made her gag, she covered her mouth and nose instantly to cover it- only to belch loudly, coughing and gagging further. Trash swirled and pushed out the grey, plastic of thick ass, and pushed out her swelling chest and breasts - by now most of her spherical mass was in her mid-section. Her wrists puffed out, tying up atleast at the joints of her arms while her unluckier calves became massive fatty grooves of grey trash-filled mass, slick and smelly to the touch.
Her gagging got worse, even her palms smelled like chemically treated feces and bleached rubber, mixing with burning tiles and contained the odorous release of an entire landfill. She finally couldn't take it, and puked out a barrage of, well trash. Wet and sticky, she couldn't identify it's contents and didn't really care to, like sticking your head in raw sewage. She didn't even want to touch it, but her hands were already wet and sticky, worse mouth dripping with the pulpy garbage-muck dripping out across her face and chin. She tried to wipe it off, the bloated rubber of her fatty, unorganized mass that was her arms only spreading it further. In the time she'd taken, her stomach and body gained another few hundred pounds, all squishing within her, bobbing up and down inside her chest, making her dizzier and more nauseous.
The sticky goop drooling out her mouth, the sewage inside her slinky body, the oily garbage-smelling sweat, it was getting her, so worked up. In an oddly frantic way inside, not wholly unpleasant. As she puked again she, found the disgusting putrid taste, between synthetic chemicals and mildew, toilet shit and sickening discarded plastic, strangely comforting. She wiped some of the goop off her pudgy, balloon'd up cheeks and started licking, morbidly at first, than slowly, next curiously and finally - pleasurably. Each stage  seemed to drip her initial disgust away, mixing any remnant with an appealing quality. She embraced that, somewhat sheepishly jiggling around her trashy handles with a squishy, bloated squeeze, hands going thru her rubbery plastic body and leaving a handprint on her squished and softened sides. She burped again, and found a pocket of gas erupting out her opposite end. "Urhmm.. S'cuse me.." She said to no one in particular.
In silence she waited, until she lifted her massive trashy thigh and, cautiously, let another massive Fppppprrhht go out her rear, reeking the air worse and worse, but sending her shivering in delight. Already her fatty trashbag funbags were leaking more of the seeping, sewage slime, she gave them a good squeeze to and allowed them to spray out, rushing her endorphins along with the sickly grimey, muddy sprinkle.
They coated her with more dirty liquified gross garbage, across her face, body and thighs, and so she gave them another squeeze. Playing with them for a bit, she felt an urrrp emerge out with more rubbage now pouring out her mouth, staining her upper-half heavily with a dark damp puddle. It ran down her body, and seeped into her shiny greasy film, each release feeling better and better. She had to back to.. something? It was hard to remember, and she doubted it was important. Someone one would find her, surely.. as she urped again and let more contamination spill away, red tie around her neck and even hair, her mind fell into pure, grossly disgusting bliss. The dirtier and messier she got, the more tiltated she became, overcome by this lovely sense of being not-very lovely. And if she had her way right now, with her thoughts warping towards an infinitude of delight for herself presently, she'd never be lovely again.