So apparently, cats fart.
I've recently learned this fun fact because Hubert has suddenly started to reek. I switched food for the cats recently since my mom had a ton that her cat wouldn't eat, so she gave it to me to see if my cats would eat it. And they have been. They seem to like it. And it was free, so bonus!
Except that now Hubert keeps dropping these horrible stink bombs every day. He'll curl up next to me in bed, purring and being all cute and tiny and baby-like (since he is only about 5 months old now), and then suddenly it will smell like death. They are totally silent but they are the worst thing I've ever smelled. I had no idea cats farted. But holy crap, it's terrible.
So, whatever brand of food this is, we are not using this again. Otherwise I might die from the stench.