human
What is the cause of Niles Crane's mysophobia?
assistant
Niles Crane's mysophobia is caused by a babysitter who told him scary stories about earwigs that would crawl in through his ears and eat his brains, and lay their eggs on furniture. (When he tells this and other contamination horror stories to a group of fourth-graders, they think he is wonderful for knowing such "cool" facts.)