Honey bees do not have ears and thus do not hear sound. They can feel vibrations in the air however. The senses of bees are acute. Anyone trying to mow grass around a bee hive can testify to the reaction of bees to vibration from the lawn mower. And in regard to smell, the sense of smell is probably better than in humans. Bees react to various hair sprays, perfumes, and other smells thus the warning in many bee books about not wearing or putting on hair sprays and perfume. Honey bees do react to something called the alarm pheromone and if you happen to be wearing anything that is similar, the bees will be attracted to it. Bees will also react to certain colors while other colors do not seem to excite them. Black is a common target as is red. Bees seem to be attracted to small areas of black or what looks black to them. Black socks are a good target for them. It may be that over the years the enemies of bees have created this reaction to human breath and dark colors. Enemies of bees do include skunks, bears, mice, and other mammals. Have you noticed how bees seem to fly around the head. It could be that they are attracted by the dark color of our hair and the carbon dioxide we exhale