The reason why mosquitoes fly close to your ear at night

Mosquitoes are notorious for their annoying buzzing which can be attributed to several factors related to their biology and attraction to humans.

The primary reason mosquitoes are drawn to our heads is the carbon dioxide (CO2) we exhale. When we breathe, we release CO2, which mosquitoes can detect from considerable distances - up to 50 meters away. This chemical cue leads them to our vicinity, especially around our mouths and noses, where the concentration is highest.

Since our ears are close to these areas, they often find themselves buzzing around our heads.

Additionally, mosquitoes are attracted to body heat and sweat, which are more pronounced during warmer months. The combination of CO2, heat, and the scent of sweat creates an inviting environment for these insects, making us prime targets for their feeding.

The sound that we associate with mosquitoes is produced by their rapidly flapping wings, which can beat up to 1,000 times per second.

This buzzing serves multiple purposes, including communication between mosquitoes and attracting mates. Female mosquitoes, which are the ones that bite, generate a higher-pitched sound compared to males. Still, there is no question both are as annoying as each other.