Sadly it's probably good for some people to see this thread just to be aware of how much people are rightfully bothered by odor downstairs, in case they weren't aware before. It should be obvious that hygiene, given the nature of this particular hobby, has got to be A#1.
But it was also a really gross story and it will be difficult to go to the bathroom at all now without obsessively washing every crevice afterwards as if I were headed for a colonoscopy.