Eureeka! // Coefficient of odiosity

What’s the best way to say to a housemate who’s twice your size, “Dude, you’re a great guy and all, but you really need to wash your ass once in a while.” And any other parts that water needs to hit but doesn’t. I can tell if he’s merely passed through the hallway 15 minutes ago by the Grand Funk, sans railroad, a roiling stench cloud of prickly BO and foul dingleberry juice. There have been a couple times where I skipped a shower in the morning because he’d just come out of the bathroom, on the basis that if I showered in there I would actually get dirtier.