This brings to mind an old story. In the early 80s, I was a Kappa Sig (long since kicked off campus). Our house was next door to Sigma Chi, with which we occasionally exchanged semi-friendly fire. During my Hell Week, I had to impersonate Sigma Chi's president for the entire week, which involved both clothing and prosthetics. Battles periodically erupted near our adjoining back doors, sometimes with fire hoses. At one point, someone at Sigma Chi made the ill-advised decision to leave the window open next to the rack where they kept their personal coffee mugs in the basement dining area--conveniently at ground level near our back door. A few of our guys took the opportunity to give the mugs an extra rinse.
A short while later, we held a weeknight party that ended around 2. At about 5, I awoke to the distinct impression that my roommate had booted in his bed. I investigated, but saw no signs of a problem and went back to bed. Later that morning, I rolled out of bed and headed to Fisk Hall with one of my brothers for a Medill class. We noticed that classmates seemed to be scootching their desks away from us throughout the class. When we returned for lunch, we learned that all of the brothers had had similar experiences--including getting sent home from work study jobs. Turns out that someone had run around our house in the middle of the night spraying butyric acid everywhere. By the time we had slept through the smell for several hours, we apparently had become accustomed to it and were unaware of how odoriferous we were. We had to move out of the house for a week and eventually had to replace all the furniture and carpet. A pain in the ass at the time, but I still get a chuckle out of how unpopular we were on campus that morning.