We had a guy here that just plain didn't shower. And was a chain smoker. On a hot summer day, even in shop with a/c, you couldn't get within 15 feet of him without becoming nauseated. When smoking was allowed in our shop, he'd burn cigs all day, every day. When we banned it, he would go to his car at lunch and smoke 7 cigs in a 1/2 hour. B.O. and cigarettes...not a winning combination for sure. He was gone in our first round of layoffs.