What are my co-workers eating....

.....that smells so bad coming out the other end that it overwhelms the industrial strength air purifier/sanitizer? I walked into the bathroom and I first get hit by the pine smell of the air purifier/sanitizer/freshener only for it to be over taken shortly there after by the noxious ass cloud, I think this is what death smells like. I had to stifle a laugh as I stood at the urinal though as I realized someone else was in one of the bathroom stalls, why is the smell of ass so funny?