Rumor has it that if you hold your breath, it reduces virus spread by 96%. Further tests are needed.
The research suggests that when a person “double masks” — wearing a polypropylene surgical mask with a cloth mask on top — and the people around them did the same, the risk of transmitting the virus falls more than 95%.
Researchers, who used two mannequin-like forms to test exposure, found a similar benefit with tightening a single surgical mask around the ears to improve its fit. Using a hack known as a “knot and tuck,” the researchers ensured the surgical mask fits closely around the face without gaps.
The benefit, though, fell to 80% if only one person wore the double mask and 60% if only one person knotted their surgical mask for a tighter fit.