Chunion Share definition Flag A form of armpit odour that resembles a combination of cheese and onion. Usually experienced after hard work or a hot day. "Babe I was doing chinups at the gym and the guy next to me copped a face full of chunion" Chunion by Ratdog82 March 1, 2017 0 0 Get merch Get the Chunion mug. Buy Now — $32.95 See more merch