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There are probably diverse species that are attracted to humans. I have seen two different Drosophilidae apparently after my sweat. Some Chloropidae are called "eye gnats."

Today in the woods I was surrounded by dark-colored acalyptrate flies. They seemed to be using me as a swarm marker rather than food. I must look and smell like a damaged tree. They did not try to enter my ear, but flew close enough to hear.