Why do mosquitoes bite some people more than others?

Mosquitoes hunt by smell, not by sight. Bacteria that live on human skin make smells, and some people's skin smells tastier to mosquitoes than others. Also, the carbon dioxide we breathe out can be found by mosquitoes from far away. People who breathe hard, like when they play sports, are easier to find.

Body heat and sweat matter too. A hot, sweaty body tells a mosquito 'I'm over here!' Some people's sweat has more lactic acid, and that pulls mosquitoes in. Blood type might matter too, but scientists are still studying that.

Even the colours we wear make a difference. Dark clothes attract more mosquitoes because they are easier to spot from far away. Pregnant women breathe out more carbon dioxide too, so they might get bitten more often.