In terms of company success, a little cleanliness can go a long way.
I heard a funny news story on the radio the other day. The reporter said a plumbing company in the western U.S. was offering customers a "guarantee" that employees who visited their homes would be clean, well groomed and not smell.
I tried to find out more about this company and its new policy, but couldn't locate the story, so I can't vouch for its accuracy. But I know the issue of appearances - and yes, even odors - come up frequently at trade show seminars and in magazines like this one.