Or is it that Kjell is hoping that you'll have an appropriate funny song in your repertoire Patrish?
As to your problem Kjell - I doubt if you'll change the sweater - if I were you I'd get an awning & stick 'im out there. I had a friend who had appalling BO due to health problems, it wasn't his fault - but I'd not feel obliged to be in a confined space with him for too long. Is there camping? Can you/he borrow a tent so you can each have your own space?
Kris