Biology
Why are some people more attractive to mosquitoes?
Quick fact
Mosquitoes are attracted to carbon dioxide, body heat, lactic acid, and specific skin bacteria—and they prefer people with Type O blood over Type A by nearly double.
Why this is interesting
About 20% of people are mosquito magnets, attracting up to 4 times more bites—and it's not just about smelly skin; it's written in your genes and your metabolism.
Read the full explanation
Understanding Why are some people more attractive to mosquitoes?
When you exhale CO2, mosquitoes track that plume. Your skin's natural bacteria produce volatile compounds, and your metabolism determines how much lactic acid and uric acid you release—all of which act as chemical dinner bells.
A deeper explanation
Genetic factors play a major role: identical twins attract mosquitoes at similar rates, while fraternal twins differ. Pregnant women attract more mosquitoes because they exhale 21% more CO2 and run warmer. Even beer consumption increases attractiveness—just one 12-ounce bottle makes you more appealing to the insects. Mosquitoes also prefer dark colors (like black and navy) over light ones, because they hunt by contrast against the sky. This chemical targeting is so precise that researchers are developing mosquito baits based on body odor profiles, which could one day replace DEET—making your unique smell both a curse and a scientific opportunity.