Colitis?
http://en.wikipedia.org/wiki/Colitis
My sister got that and talk about fucked up. It took her weeks before she went to the doctor. The smell is unmistakable as it smells like you shit out a rotted intestine and when the smell hits the air it expands to 500 times it's normal size. Worse than any data after shit from drinking beer and eating spicy wings where you need a 5 point saftey harness keeping you down on the bowl.