Once at the Exploratorium in San Francisco I saw an exhibit where mosquitos were in a mesh terrarium, such that you could offer your hand to them without being

Once at the Exploratorium in San Francisco I saw an exhibit where mosquitos were in a mesh terrarium, such that you could offer your hand to them without being bit. I offered my hand and had few takers. Someone else stepped up to the exhibit and offered their hand, and many mosquitoes flocked to them.