TL DR:
You can't blow out a match in front of your mask–not because the air is filtered, but b/c it is REDIRECTED.CRITICALLY IMPORTANT, b/c 99% of all respiratory aerosols, that carry 87% of virus, aerosols are < or = 0.5 microns & physically cannot be filtered by impaction. https://t.co/nfY2O5xTRK
— Emily Burns😊 #SmilesMatter DM’s OK (@Emily_Burns_V) April 16, 2021