Can disposable masks be sterilized and reused by medical alcohol spray after use? Feng Luzhao, a researcher at the China Center for Disease Control and prevention, said that the disposable masks used by ordinary residents in places with low risk can be reused to ensure that the masks are clean and structurally complete, especially when the inner layer is not polluted. After each use, they should be placed in a clean, dry and ventilated place in the room. In addition, spraying disinfectants, including medical alcohol, will reduce the protection efficiency, so it is not suitable to use alcohol spray to disinfect the mask.

The reuse of masks should be divided into specific situations. If you are alone, for example, you don't have to wear masks when you are not in contact with outsiders at home, including in a private car, or when you are alone outdoors, in a small area, or walking in a park with few pedestrians, you don't need to wear masks.

However, patients who enter and leave densely populated public places and take means of transportation, including shopping malls, elevators, meeting rooms and general medical institutions (except fever clinics) can wear general medical masks, which are called disposable medical masks.

In this case, the mask can be reused in a clean, dry and ventilated place after returning home. For the staff in the intensive places, including those engaged in the industry, administration, police, security and express delivery related to the epidemic situation, it is recommended to wear medical surgical masks. The use time and replacement frequency of the masks can be appropriately extended according to the actual situation. Generally speaking, if the masks do not have obvious dirt and deformation, it is not necessary to change them every four hours, but for example: In case of dirt, deformation, damage and peculiar smell, it shall be replaced in time.