Secret fart fetish
I have a closet fart fetish. My girlfriend doesn't know it but I secretly inhale as many of her farts as I can. When she farts in her sleep, I try put my nose as close as I can to her butt and sniff. I also sniff the toilet after she's been just to inhale her gas.
I want her to make me eat/sniff all her farts but I know she doesnt like that idea.