i worked in a dept store and never had any problems. i dealt with the public all the time and didnt get more germs than normal. like lots of people have said- whats he interested in doing when he's older? because that could be a good start, and quite possibly he will be working with the general public. i work in the juvenile justice system now...some of the people we deal with are pretty damn gross scum of the earth kind of people (and thats putting it nicely!) and i've still had no problems with germs etc.