Why do flies land on humans, i get that female mosquitoes want our blood to lay eggs, but what about houseflies?

Question

Why do flies land on humans, i get that female mosquitoes want our blood to lay eggs, but what about houseflies?

In: Biology

Answer 1

Flies are always on the lookout for food, so they land on things and taste them. To taste them they vomit onto the surface they’ve landed on then suck it back up to get the taste.