Why Silk Is One of the Best Materials For Face Masks

At the start of the coronavirus pandemic, Patrick Guerra’s wife, a doctor, would strap on an N95 respirator mask, then cover it with a disposable surgical mask to prolong its use. The Centers for Disease Control and Prevention (CDC) recommends healthcare workers put on a new N95 respirator after each patient, but a national shortage of N95s and other equipment made that impossible.