They do not try to get tangled in your hair. They can some times swoop very close to people while in pursuit of an insect and get tangled in someone's hair, but usually the bat is right on target and misses the person. Another superstition is that bats carry rabies. Because of some studies done a long time ago with bats that had the Rio Bravo Vims which is a harmless disease that has the same symptoms as rabies, bats got the reputation for carrying rabies. Actually bats help farmers by eating bugs that the farmers don't like.
Bats are also mistaken for birds when they fly.
Bats don't bother anybody if they are left alone. Almost 40 percent of the bats in North America are threatened or endangered. One of the ways that bats became endangered was from eating insects that had poisonous chemicals on them that were designed to kill the insects. Scientists and other people are trying to help bats by protecting the places where they roost.