Which mask to wear for maximum protection against COVID? Here’s the answer
The mask should be worn properly - that is, covering both the nose and mouth of a person for protection against the virus.
Apr 18, 2021, 14:17 PM ISTCloth masks poor at protecting you against air pollution
Wearing inexpensive cloth masks in the hope of reducing exposure to air pollution may be of only a little benefit and give you a false sense of security, especially in highly polluted areas, new research suggests.
Aug 21, 2016, 00:02 AM IST