This reminds me of one I was told by a re-enactor friend. His group of medieval re-enactors were spending the night in a well known historical building in the centre of York (no longer a place they allow randomers to doss overnight because insurance, and also it's now a fragrant wedding venue).
This would have been about 15 years ago. Anyway, one of them wakes up in the night, after the usual booze-fest re-enactors/living history people usually have after the public go home, and needs some fresh air I guess, and decides to go outside.
Right there, in the doorway of the lovely medieval building, some random person has taken a big, loose crap. Friend said his mate said it wasnt dog poo, very obviously human. He decides to clean it up - probably a homeless person or a passing drunk, but he doesn't want to leave it in case the venue's owners think it was them and won't let them stay again. But as he starts cleaning it up, he starts retching - upshot being there is a massive vomit on top of this poo. He goes inside and tells someone else who comes out, tries to clean it up but also throws up on it...
Now its a swanky wedding venue that would totally ruin the ambience.
ETA: Not sure whether the medievals ever managed to clean up the mess or whether they just left it but I never go in that building but I don't spare a thought for what happened in the vestibule.