What is the most efficient transmitter of disease in the animal kingdom? The female mosquito—no fur, no fangs, just a hypodermic needle with wings. She uses scent to find us, attracted by the lactic acid and other ingredients in our perspiration. She also senses the carbon dioxide in our exhalations. The more you sweat and pant as you shoo her away, the more attractive you become to her. Mosquitoes are BACK, Virginians, and we want to help you decipher the FACTS and the MYTHS about those little ankle-biters.