Do flies really throw up on your food when they land on it?

By Ravindra Palavalli-Nettimi, Postdoctoral Research Associate, Florida International University
Jamie Theobald, Associate Professor of Biological Sciences, Florida International University

Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to curiouskidsus@theconversation.com.

Do flies really throw up on my food when they land on it? – Henry E., age 10, Somerville, Massachusetts

Imagine you’re at a picnic and just about to bite into your sandwich. Suddenly you spot a fly headed…

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