My husband, a scientist, has done all sorts of daft things in the past, including making enough hydrogen sulphide to necessitate the evacuation of an entire building of the university (In fairness, he was a student at the time, not a professor)

i, a scientist and (allbeit briefly) a science teacher, once fell out of a tree whilst urinating

Knowledge will not be defeated! (at A-level we had a science teacher who showed us how to do things like hammer a nail really quickly into a nos canister to use as a projectile, and once came into a class he wasn't even teaching with a carrier bag filled with gas to set it on fire and then start...

Chemistry buildings are very often the newest on campus, or being built. There is a reason.

My own father made enough chlorine gas to wipe out all of the pigeons at his high school. Me, I just dumped some lithium in the sink drain.