The reason why Europeans and Americans refuse to wear masks is that they think sick people need to wear masks. In fact, this is a sign of ignorance. In China, people wear masks to avoid cross infection. No matter who is sick or not, you need to wear a mask. Coverage can prevent them from playing a defensive role without knowing that the other party is carrying the virus. However, in the eyes of Europeans and Americans, they think that masks can't stop the virus at all, but can only prevent people from touching their noses and mouths and causing infection, so they are useless at all.

In Europe and America, most people don't wear masks. On the contrary, people wearing masks will be regarded as sick people. But if you meet someone who doesn't wear a mask when you go out in China, it will definitely cause panic, because if he doesn't wear a mask, it is likely to cause infection, and wearing a mask can greatly reduce infection. Europeans and Americans attach great importance to human rights, thinking that they don't want to wear masks, but this is compulsory in China.

Moreover, most people in China think that wearing a mask is not only a way to protect themselves but also others, so it is necessary to wear a mask when going out. Europeans and Americans think that they know the structure of masks very well, and masks can't stop viruses at all, so there is no need to wear them. Although they are not completely wrong in saying this, it also shows their ignorance. All medical staff all over the world are actively promoting wearing masks. If it really doesn't work, there is no need for front-line medical staff to wear masks.

So Europeans and Americans only know one thing and don't know another. Masks still have a certain defense ability against viruses, at least medical masks have such a function. Europeans and Americans can't buy medical masks now, and their country's production capacity can't keep up. They can only think that wearing masks is useless. In fact, this is an excuse for your ignorance. Wearing a mask can at least avoid contact with other people's saliva, so there will be no cross infection.