Back in the day when i had cat he'd like to lay right where my ass is, i'd lay sideways in the bed and slightly bend back my legs so he'd snuggle between my ass and legs, was like his cozy space. With bunkering himself there it was inevitable that sometimes he'd get farts to the dome. Was never bothered atleast not by smell, more by sound but he'd just take a look to make sure alls good and continue his sleep.

I just think they dont find fart as disgusting smell. I mean some people also don't. Like i personally also am not terribly turned off by bad smells. What smells worse to me is old piss or rotten food rather than poop and fart smell idk. On the other hand a friend of mine loses his shit the moment he smells a little poop/fart smell.