Near constant flatulence that has a smell so powerful to me that I risk cumming on particularly strong farts. In addition I can’t hold them back for more than 10 minutes at most; if I try then it’ll practically explode out my rear end, soil my pants a bit, and of course make me cream them like I was edging for a whole day.

The thing is, it becomes oddly easier to hold it if I somehow manage to keep them contained past that threshold point (I.e. industrial butt plugs) but if they’re held in for over an hour I can’t fart for a week. Instead, my cock farts instead of cumming (but the cum is still built up in my balls) and my body odor becomes my farts. My breath is of course foul to everyone but me. The result is if I hold it in too long, I become a perpetually aroused, sporadically ejaculating filth hound.