What do you call someone who is afraid of germs?
The term germaphobe as well as bacillophobe and bacteriophobe is
used but is an informal definition for a person who is afraid of
dirt, germs, and/or bacteria. The more formal and common
terminology for the fear of germs or of being infected and which is
also related to OCD type behaviours (e.g. chronic hand washing) is
referred to as mysophobia. Therefore someone with these fears would
be considered a mysophobe.