Mosquito Magnets: Why Odor, CO2, and Heat Make Some People Prime Bite Targets

Scientists say female mosquitoes decide who to bite by a mix of signals: the carbon dioxide we exhale, our body odor shaped by skin microbiota, and local heat/humidity. Blood type isn’t a factor, though a skin-oil compound called 1-octen-3-ol can boost attraction, and even beer consumption can increase bite likelihood by altering CO2 output and odor. As climate change expands mosquito ranges, understanding these cues helps explain “mosquito magnets” and offers practical bite-reduction tips (cover skin, use nets and repellents, and moderate alcohol/food).