Mosquitoes are annoying. Why do they suck human blood?

Mosquitoes bite people mainly to suck blood and let them lay eggs.

Generally speaking, female mosquitoes bite people because their ovaries develop and feed on human or animal blood before laying eggs. Male mosquitoes can survive only by sucking dew and juice, and don't bite. Mosquitoes have poor vision, but a keen sense of smell. Looking for blood-sucking objects mainly depends on many short hairs on the antennae.

These short hairs will respond to the changes of chemicals in the air, and are particularly sensitive to carbon dioxide (CO2), heat and some volatile chemicals. Through the induction of these substances, it can accurately approach the blood-sucking object. Therefore, as long as you breathe, sweat or emit heat, you will inevitably be bitten by mosquitoes.

Extended data:

Types of people that mosquitoes like to bite:

1, fatty

Fat love sweating, this is where they attract mosquitoes. Because of the high body temperature, the odor emitted by people in love sweating contains more amino acids, lactic acid and ammonia compounds, which are easy to attract mosquitoes.

2. People who love sports

After exercise or physical labor, people will breathe faster and exhale more carbon dioxide. Carbon dioxide gas will form a moist and warm airflow at about 1 m overhead, which mosquitoes are sensitive to and will "smell".

3. People in dark clothes

Mosquitoes don't sleep during the day and come out at night, mainly because they have the habit of dark. Its visual system is most active in dark environment, and black with weak reflection effect attracts them most. If you wear dark clothes, mosquitoes will drive away in the dark. If the skin color is getting darker, it is easier to attract mosquitoes.

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