DEAR HARRIETTE: I have a co-worker who has serious B.O. I know he showers and takes care of himself, even though he doesn't smell like it. We were on a business trip recently and had to stay in the same house. I witnessed him take long showers each day, and still he reeked of his awful musky scent after a few hours. I find it close to intolerable to work with him. His body odor makes me want to th…