When female mosquitoes are looking for a human to bite, they smell a unique cocktail of body odors that we emit into the air. These odors then stimulate receptors in the mosquitoes’ antenna. Scientists have tried deleting these receptors in attempts to make humans undetectable to mosquitoes.
Click here for original story, Mosquitoes have neuronal fail-safes to make sure they can always smell humans
Source: Phys.org