I mentioned that to my doctor once, that my poop smells disgusting when I'm flaring, and he discounted it saying that smell had more to do with what you eat. However, I know, as does my husband, that when I'm flaring, it smells so gross it almost gags me.
Before I was diagnosed, I'll never forget this, I was in college living in the dormitories. I stunk up the whole floor, but I was so embarrassed that I left and hid at the student center. Later, my roommate told me that had searched the bathroom to see if something had died in the pipes!