why mosquitoes continually perches,fly and irritates us as we sleep

Mosquitoes are attracted to humans for several reasons. One of the main factors is that they are attracted to the carbon dioxide we exhale, as well as other chemicals and odors that are emitted by our bodies, such as sweat and lactic acid. Mosquitoes also have heat sensors that help them detect warm-blooded animals, including humans.
When you are sleeping, your body is at rest and your breathing and body heat are relatively stable, making it easier for mosquitoes to find you. Additionally, mosquitoes are attracted to areas of the body with more blood flow, such as the ears and the neck, making those areas prime targets for them.
Mosquitoes have specialized mouthparts called proboscis that they use to puncture the skin and feed on blood. They are attracted to certain chemicals and compounds found in our skin, which can vary from person to person. This is why some individuals may be more attractive to mosquitoes than others.
To reduce mosquito bites while sleeping, you can take preventive measures such as using mosquito nets, keeping windows and doors closed, using insect repellents, and wearing long-sleeved clothing.

Does mosquito bite kills

In general, mosquito bites do not directly kill humans. However, mosquitoes can transmit diseases through their bites, some of which can be deadly. Mosquito-borne diseases such as malaria, dengue fever, Zika virus, and West Nile virus can cause severe illness and even death in some cases, especially if left untreated. These diseases are more common in certain regions of the world where the mosquitoes that transmit them are present.
It is important to protect yourself from mosquito bites to reduce the risk of acquiring these diseases. This can be done by using mosquito repellents, wearing protective clothing, and eliminating mosquito breeding sites around your home. If you live in an area where mosquito-borne diseases are prevalent, it is essential to seek medical treatment if you develop symptoms after being bitten by a mosquito.