When I was working for Safeway there was this night shift manager who had really bad BO. At the end of his shift he would leave his work smock hanging in the office. One day a bunch of us workers got a bar of soap and some deodorant and put in the pocket of his smock when our night shift was done. A few days later he showed up for our night stocking shift minus the bad BO. He never said anything to anyone but I think he knew we did it. He got the message