Studies have shown that mosquitoes bite people selectively, and those who can bring mosquitoes rich cholesterol and vitamin B are most favored by mosquitoes. Mosquitoes use their sense of smell to find the object that suits their "appetite" best from the crowd. Cholesterol and vitamin B are essential nutrients for the survival of annoying insects such as mosquitoes, and they cannot produce these substances by themselves.

Mosquitoes have a strong sense of smell. When humans exhale carbon dioxide and other smells, these smells will spread in the air. These smells are like the bell for dinner, telling mosquitoes that a good meal is just around the corner. When a mosquito tracks a target, it always twists and turns with the smell of people's breath until it touches the target and then falls on the skin, patiently looking for a "breakthrough". Finally, directly insert the "needle tube" into the skin to suck blood for 8- 10 seconds.

Second, the following kinds of people are easy to attract mosquitoes:

First, people with developed sweat glands and high body temperature.

Second, people who are tired or breathing faster.

Third, people who like to wear dark clothes.

Fourth, people with fast metabolism.

Fifth, people who have made up.

Sixth, pregnant women.

Seventh, people who drink.

Third, how to refuse the "red envelope"

1. Take a bath as soon as possible after exercise to keep your skin fresh. It's hot and sweaty, so wipe off the sweat with paper towels and handkerchiefs in time.

2. If there are many mosquitoes in daily activities, wear long-sleeved clothes. This is not because mosquitoes can't stick needles in it to suck blood with an extra layer of cloth. In fact, the needles of mosquitoes are very sharp, even cowhide and thick jeans can penetrate, and the clothes worn in summer are simply unbearable. The function of clothes is mainly to cover up the smell of skin secretions such as sweat, so that mosquitoes can't track it.

3. It is best to wear white clothes for outdoor sports, because white clothes have strong reflective ability and can drive away Aedes mosquitoes.

Don't wear socks because it is too hot in summer, which will make the sweat evaporate quickly and attract mosquitoes to attack other parts of the human body. Wearing socks with good sweat absorption effect can not only effectively reduce skin humidity, but also cover up odor.

5. It is not advisable to use irritating cosmetics such as perfume in places where there are many mosquitoes.

Fourth, take the following measures to relieve itching:

1. Most people will have symptoms such as redness, itching and pain after being bitten by mosquitoes. At this time, you can use alkaline substances to relieve itching, such as ammonia water, or you can use soap dipped in water to apply it to the redness and swelling, which will stop itching in a few minutes.

2. If the bite is itchy, you can play it with your fingers first, and then apply toilet water and wind oil.

3. Applying or brewing the itchy place with salt water can soften the lump and effectively relieve itching.

The juice in aloe leaves can be used to relieve itching. When you are red, swollen and itchy after being bitten by mosquitoes, you can cut a small piece of aloe leaf, break it after washing, and rub it a few times at the red and swollen place to reduce swelling and relieve itching.