Get all the latest news on coronavirus and more delivered daily to your inbox. With some states requiring residents to wear face masks in public to help stop the spread of the novel coronavirus, at least one mask could actually do more harm than good: An N95 respirator, but only if it has a small valve on the front. Essentially, if the wearer were to sneeze or cough, infectious droplets could travel through the one-way valve, possibly putting someone near them at risk for contracting COVID-19 or another respiratory illness. CORONAVIRUS: WHAT YOU NEED TO KNOWValved N95 masks are not typically used in a medical setting, though they are said to make breathing easier, according to a 2008 study on the masks. City health officials, meanwhile, suggested covering the valve with tape.
Source: Fox News May 06, 2020 14:12 UTC