This type of mask does not prevent Covid-19, and can even spread the disease more strongly.
A number of health agencies have advised people not to use masks with exhalation valves, and airlines have even banned passengers from wearing them.Wearing medical masks often affect the skin?
Does wearing a medical mask often cause skin irritation? How to wear a mask to prevent disease and not affect the skin?Can medical masks prevent corona virus?
Can wearing a mask on the move prevent the risk of corona virus disease? Experts have answered this question.
