I can recall quite a few BO incidence in regards to ppl's hygiene....I once knew this Nova Scotia chick who smelt so terrible that I held my breath for two minutes, plus another minute more before my subway stop.. :S
Thankfully I keep my BO under control and for the most part people tell me that I smell good....
(SPOILER)FYI I have never used deodorant EVER.... (I also shave my pits)