I guess everyone has a bad roommate story...
I once did an internship where I had to move to another state and room with 3 other women (there were a total of 16 interns) I really felt like I was a cast member on the Real World.
Two of my roommates were wonderful and we clicked!! The other....well she was going through some personal things so when she was having a bad day...she made an effort to make sure she put everyone else in the same mood.
One night I cooked for all the interns (she was at work) when she came home she ran to her room and slammed the door...why?? 2 minutes later so came out, I told her I cooked and left some food for her...her response....
"next time you cook, please shut my bedroom door. The smell from "your kind" of food is all over my stuff"
OMG!! My jaw dropped