If you've ever sprayed yourself head to toe in bug repellent, yet still felt like a mosquito magnet, it will come as no shock to you that mosquitoes are very, very good at finding humans to bite. One key factor in this superpower is their keen sense of smell, or olfaction, which relies on the olfactory system.

"Mosquitoes are highly specialized," says Meg Younger, a Boston University College of Arts & Sciences assistant professor of biology who studies mosquito olfaction. These relentless, buzzing creatures are designed to find us, bite us, use proteins in our blood to reproduce-;and repeat. Mosquitoes, as much as they feel like a seasonal nuisance in the Northeast US, are deadly creatures that kill more people than any other animal in the world. Depending where they live, certain types of mosquitoes transmit diseases like malaria, West Nile virus, Zika virus, dengue, eastern equine encephalitis, and others. And warmer, dry, and tropical climates battle mosquitoes all year long.

https://www.news-medical.net/news/20220819/Study-reveals-the-unique-and-unconventional-way-mosquitoes-process-odors.aspx