Giantess making you her fart inhaling slave

Custom video made for one of my fans - name used throughout the video: Mark. I bought a tiny creature off the internet, from some underground website, and his name is Mark. I posted about it on my Twitter and got many suggestions from my fans regarding how I should torment him, like drowning him in my spit and squeezing him under my heel. But I have a much better idea - sticking his head inside my ass and getting him to swallow and inhale all of my stinky farts. Hopefully that will help reduce the smell - if he makes himself useful, I might even keep him around!