How many times can disposable masks be used?

Although disposable masks are common in the market, they are "disposable" in principle. However, Jin Xiangyu said that as long as in most life scenes such as "non hospital", such masks can be used two to three times, "but it is not recommended to use them n times.".

For example, if you take a walk inside and outside the community, you can take off the mask after you go home, put it in a ventilated environment, air or dry it naturally, and prevent the accumulation of bacteria on the surface, and then you can use it again. Disposable masks are not washable.