My wife keeps farting really bad and she doesn't seem to be doing anything about it?

My (39F)wife always has a smelly gas that comes out in the oddest times. We were intimate with each other and she let a big fart and i went "WTF" but she completely ignored it as well as I couldn't help but laugh and then she lets another one and I said "the hell?" She ignored it again. and she does this all the time but she completely ignored it. i am a man and i let my wife know when i let a silent but deadly one rip and I feel bad but she is just completely ignoring me and it really sucks.