They detect CO2 and odors: "Both Aedes aegypti and Anopheles gambiae mosquitoes — which transmitdengue and malaria respectively — were much less attracted to t

They detect CO2 and odors: "Both Aedes aegypti and Anopheles gambiae mosquitoes — which transmitdengue and malaria respectively — were much less attracted to the scented beads after being exposed to the chemical. These results showed that the receptor responsible for detecting carbon dioxide also detects skin odorants." https://www.nih.gov/news-events/nih-research-matters/how-mosquitoes-detect-people https://www.nih.gov/news-events/nih-research-matters/how-mos... And thermal features: http://www.caltech.edu/news/mosquitoes-use-smell-see-their-hosts-47338 http://www.caltech.edu/news/mosquitoes-use-smell-see-their-h...