nothing my self but in the 90s when i worked in a office a guy got fired for aggressive behavior,he went out for dinner got drunk and got arsey with his boss,he was fired on the spot as he was very aggressive
all this happened on 4 floors above me so im going on my friend(at the time) say so.
a few weeks later we were going through a heatwave and this horrifying smell just wouldn't go away and the poor new woman who took over his job couldn't sit in the room anymore as it was so bad,all was deeply cleaned and still nothing changed,a week later she saw something dripping from the air conditioning system,it turned out he unscrewed the air conditioning flap put in some sea food and screwed it back up and in the heat it went rotten
months later winter came but this smell still lingered,she said it was a sewer smell so they emptied the whole office of everything,repainted it,new curtains,carpets still wont go away so they locked the office and left it.
months later the whole building had a new heating system,room was fitted and when they took out the radiator a box fell out he pooed in a box unscrews the top section placed it in and screwed it back up and as it was a tupperware box it was still intact
i left the week after so dont know what happened after but i will always remember his clever way of getting back at them