people are a bit weird about hairs... I made a mate of mine a sandwich a while back (who is usually fairly 'normal') and unfortunately a hair must have fallen out of my head next to the sandwich on the plate, when he saw it he acted like I'd given him a dog shit sandwich or something.... I mean it wasn't even on the sandwich.
I visited a friend in Berlin once, and she had a mental breakdown when I combed my hair in her apartment. She also made me scrub my hands with surgeons hibiscrub detergent under scalding hot water ever time we came in from the street.