The buzzing sound is the sound made by mosquito wings as they pass through the air vibrating up and down. When a mosquito flaps its wings, it makes a sound; when it doesn't flap its wings, it makes no sound. Mosquitoes do not have specialized sound-producing organs and only rely on the vibration of their wing membranes to produce sound. Mosquitoes have 22 teeth. Mosquitoes have only one pair of wings, and the other pair degenerates into balance rods. Generally, mosquitoes vibrate about 594 times per second when flying.
Human ears can hear vibrations in the air, but these vibrations must be in the range of 200,000-20,000 times per second. Anything less or more than this range cannot be heard by human ears. Flies and mosquitoes buzz as they fly. This buzzing sound is made by the wings. The vibration of the wings of flies and mosquitoes when they fly is exactly within this range.
A common saying is that carbon dioxide is very attractive to mosquitoes. When people breathe, carbon dioxide is produced, which will form an airflow near your head, so mosquitoes are often near your head. Wander. Some people usually exercise more, have greater lung capacity, and have higher body temperatures, which will make them more attractive to mosquitoes.
Another way of saying it is that mosquitoes like some special smells. Human ears are in contact with the outside world. Whether you have dry or wet ears, your ears will secrete cerumen, which is earwax. For mosquitoes, the smell of earwax is very strong, so mosquitoes prefer to fly near the ears.
The sound of a mosquito is not caused by the mosquito's "squeaking", but by its wings. Because when mosquitoes fly, their wings vibrate very quickly, so they make a buzzing sound. Because the mosquito's "mouth" is very powerful, it gives the illusion that it is screaming.
The active ingredient in chemical repellent mosquito coils is pyrethrin, which can repel and kill mosquitoes. However, mosquito coils are best used outdoors, such as around the home, at the door or in places with good air circulation. Light mosquito coils in the evening before dark for the best repellent effect.