That's not deodorant - its Body Glide... (to keep things from chafing - its not just for chamois!)
Ah, guess I'm lucky that isn't something I have an issue with! Maybe on a bent your upper body does move enough, either.
My photoblog http://dragons-fly-peacefully.blogspot.com/
Bacchetta Giro (recumbent commuter)
Bacchetta Corsa (recumbent "fast" bike)
Greespeed X3 (recumbent "just for fun" trike)
Strada Velomobile
I will never buy another bike!