answer:Actually, it’s only the female mosquitoes that bite. Usually, if there’s a mosquito buzzing around you, it’s a female looking for blood. The sound of the buzzing helps their cause in a different way than making us crazy. The buzz noise comes from their wings flapping rapidly (which is why you hear many other flying insects “buzz” as well). Certain species of mosquito use this noise in mating. They can change the speed of the flapping to harmonize with one another. When they do harmonize ..it’s mating time. I believe I read somewhere that the males usually try to harmonize with the females – rather than vice versa. The risk of death is worth the chance of reproducing. Researchers have actually been trying to “play” with this sound to find ways to irradicate, or depopulate, certain species of mosquitoes (to help reduce the spread of certain diseases that these species can carry).