Mosquitoes don’t bite everyone equally. According to research, “around 20% of individuals are targeted by mosquitoes while generally ignoring the rest.” Several personal traits and behaviors can make someone more appealing to these pests.

**Blood Type & Secretions**
People with Type O or AB blood are more likely to be bitten, especially if they release a chemical through their skin that signals their blood type—something about 80% of people do.

**Carbon Dioxide Output**
Mosquitoes are attracted to CO₂. The more you exhale, the more likely you are to be bitten. Larger individuals and pregnant women, who breathe out more CO₂, are common targets.

**Body Heat, Sweat & Odor**
Mosquitoes are drawn to body heat, sweat, and compounds like lactic acid and ammonia. “Your body odor is also determined by your genetics,” which explains why families may share the same mosquito magnetism.

**Skin Bacteria**
The type and amount of bacteria on your skin—especially around the feet and ankles—can attract mosquitoes due to the distinct smell they produce when mixed with sweat.

**Other Factors**
Pregnancy, alcohol (like beer), and certain foods—especially bananas—can also make you more attractive to mosquitoes, though the science behind some of these links remains unclear.