-noun, plural - stinkuariums, stinkuaria.
A small room or enclosure in which someone is taking a hot shower and has also farted. Alternatively, someone comes in and takes a huge dump while you're in the shower.
The hot shower mist picks up the odour and causes the sensation of swimming in stink.
-I went to brush my teeth while Todd was taking a shower yesterday and I walked into a stinkuarium!