As a camp director you often get to take care of the tough jobs, like telling the one kid at camp who hasn't showered all week that he really stinks.
I tried to run it through my head how to tactfully tell him he was killing everyone with his stench. I thought I finally figured it out and strolled over next to him. While trying to hold my breath, so not to smell him, I said, "Wow, do you smell that? Someone's deodorant is definitely NOT working!"
I thought he got the hint until he said, "It's not mine, I'm not wearing any!"