Can flies bite people?
ANSWER: As flies do not have teeth or a stinger, they cannot bite people. They do have needle-like hooks that they can push into victims. This sometimes feels like a sting or a bite but no teeth or stingers are involved. These hooks help them to make food easier to eat but can also spread diseases. Flies have been known to spread tuberculosis, typhoid fever and diarrhea.
Source: https://www.pestworld.org/