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Emma was a blonde girl who wore a pink shirt and black pants. She had a big butt that was easy to notice. I was with her inside a vent to reach the room Emma wanted us to go to. Emma said climbing the vents was the only way to get there. I had never seen the room before, and I knew nothing about it, but I followed her because she wanted to show me. Inside the vent, I was behind Emma, so I got a great view of her butt. In all honesty, I'm not into many wild things, I like having girls sit and fart on my face as long as they wear something, I'm uncomfortable around people with no clothes. Honesty I don't like the smell of girl farts, (they stink) I like being seduced by their nice booties and suffering in their stinky fumes. I wish I could ask Emma to fart on my face, to make me suffer in the foul fumes bound between that thick booty, her buttcheeks were so juicy and seductive in the pants she was wearing. But I know better than that, she would think I'm really weird and might dislike me for it. On the bright side I could still stare at her butt from here. I was hoping she would accidentally release a fart right in front of me, but that would stink up the vents and I don't think she would want her parents to smell that. But at the same time I wanted it to happen. It was pretty slow crawling through the vents, but it let me stare at Emma's rump as much as I desired. Without warning, I heard her release a big methane fart. I took some quiet whiffs of the fumes and looked down so she wouldn't see me looking at her butt. I coughed and pinched my nose from smelling the stench surrounding me. Emma looked back and stopped, her butt still pointed in my direction.
"Sorry about that, I forgot to let you know I'm fairly gassy." Emma said, turning around. Sadly she didn't fart again in the vents, but I stared at her juicy butt until we reached the room she wanted us to find. We climbed down and I looked. This room was her library, I've been here before. The walls were purple and the floor was blue. There were bookshelves with stories from her favorite authors. I don't understand why she made us climb a vent to get in here. When I tried to open the door, it was locked.
"Why did you want us to go through the vent?" I asked. It was odd to me that she pulled a trick on me. She smiled at me and put me to the ground. I was scared at first because I had no idea if she would try to kidnap me or what. Emma sat on my face and her luscious ass sat on my nose. I was blushing and staring at the large booty above me. She rubbed her butt in my face.
"I bet you were staring at this thing the whole time~" Emma said seductively, shaking her butt. She was exactly right but I felt hot. Was she only sitting on my face to taunt me, or did she know I liked this? "You can tell me how you feel about this..." She giggled empathizing what she was referring to by smearing her butt in my face. I took a whiff of her butt and gagged. Who knew a teenage girl's butt could stink so bad? "Come on, stop sniffing and tell me~" Emma said with her lovely voice again. I explained to her the whole fart fetish deal and she was giggling again.
"I bet you wish you were trapped between my buttcheeks, sniffing my farts!" Emma laughed, releasing a 4 second methane fart. She sighed. "Oh sweet relief, I was holding this in just for you." Another toxic fart escaped her bubbly ass. Emma was being hardcore with the butt rubbing. At this point her buttstink would equate to her farts, or smell worse. I could tell she was eager for me to get a huge whiff, so next I took one. The next second I regretted it. The gas was far worse from what I smelled in the vents 5 minutes ago. Emma giggled as she heard my suffering coughs. "I'm warning you, this one is deadly." She said seductively, unleashing a huge 7 second methane fart. Why did her farts smell like they came from cows? I would pass out if I had to keep smelling these fumes. She constantly barraged my nose with these noxious gasses. I bet people could use this for stink bombs, I wonder why she hadn't considered donating her gas yet. Her butt was very sweaty and I was exhausted from taking in the strong stench. The cow smelling farts were much worse than I thought. How could a girl have such toxic gas? If someone came through the door they would get knocked out from the smell. I just realized we never put the vent cover back on the wall. Meanwhile, I just kept taking huge whiffs of Emma's butt. I had to admit it was too tempting not to smell her big rump that sat in front of me.
"Why do your farts smell like they're from cows?" I asked.
"I have a habit of taking in farts and adding them to my own. In other words I smell cow farts a lot." Emma giggled. If that was me I'd faint to one blast from a cow's rear.
"Must stink." I said.
"Oh it did, they're all in one place where their gas is stored. I have to try and keep my consciousness in there. It's really foul and hard to breathe in there. Everywhere you'll smell nothing but methane." Emma replied. I didn't understand how smelling cow farts added that scent to her own, but whatever. There were bigger things to worry about, like trying not to pass out under her butt. I heard her release a long SBD. Holding my breath I watched her butt jiggle side to side on my face.
"Just smell it already," Emma said. "You cannot avoid it forever." She was right, my nose was stuck between her buttcheeks. I took a hesitant silent sniff and I was gagging. Emma giggled with satisfaction, smearing her deadly buttstink on my nose.
"I think it's time you get a taste of my 'secret weapon'..." Emma said, shaking her butt. "Night night." I heard her say as she unleashed a 14 second methane fart. It was like dropping a gaseous nuke in my nose. I saw her beautiful devious eyes looking down at me as I passed out from the strong fumes.
