New study finds masks much more effective when covering above the nose
"Every time we breathe through our noses, we exhale a higher concentration of contaminated air than if we were breathing through our mouths," Dr. McRaiger, an American ICU physician, explained on N12
An Orthodox Jewish man wears a mask while talking on a cellphone in the Orthodox Jewish community of the Borough Park neighborhood during the outbreak of the coronavirus disease (COVID19) in the Brooklyn borough of New York, U.S., April 30, 2020.(photo credit: REUTERS/CAITLIN OCHS)ByIDAN ZONSHINE
