Folks that never shower or bathe, why?

I have a few acquaintances that have developed quite a funk. I'm afraid to ask if they think they don't reek or if they have reasons that are more important to them.

I know there's research that supports bathing much less than once per day but this is different. Obviously none in months or years. Lemmers that don't ever shower or bathe, what's your reasoning? Thanks for your insight!