Although some experts emphasized that COVID-19 virus may spread through aerosol at the press conference in Shanghai, some experts have denied this rumor at the press conference in Hubei. They said that there is no direct evidence that COVID-19 can spread through aerosols, so we don't have to worry. But the question is, what is an aerosol?
For example, suppose you have a patient in COVID-19 next to you. He suddenly coughs or sneezes, and then his droplets will be suspended in the air, forming small droplets in the air. But some water droplets are not heavy enough to sink to the ground, so they temporarily float in the air and form aerosols. There is a saying that COVID-19 can spread through aerosols because people think that aerosols can enter the human body with breathing.
But now people are aware of the prevention of COVID-19 virus, and they all know that they should wear masks when going out and keep ventilation at home. Therefore, as long as we wear masks in the right way, we can cover our mouth and nose tightly. In this way, even if you are surrounded by aerosol with virus, you can't inhale it.
In addition, as I said just now, we usually open the window to ventilate at home now. In this way, the aerosol will be diluted and blown away by the wind, and the indoor virus content will be much lower. You know, if the virus wants to infect people successfully, it is either very toxic or in large quantities. This time, COVID-19 virus is not very virulent, so it can only beat healthy people in quantity. So as long as we open the window to ventilate, we generally won't be caught.