WBUR spoke to several experts to learn more about the science behind one-way masking, and how to test your own mask at home.
workplaces, museums and stores have also shed their mask requirements. For those who are still wearing masks, just how good is the protection they offer from COVID? And what — if anything — can be done to improve it?
But these days, fewer and fewer people are wearing masks in public places, and that means the protection that mask has to offer is not as good as it used to be. Brosseau developed a chart that offers a rough estimate of how long it takes to have a COVID “exposure” if you’re next to someone who is infectious.She admits there are some caveats to her chart, including its use of the CDC’s definition of 15 minutes for an “exposure” to COVID. That number is “not based on any science,” Brosseau said.
put a hood over their head. Then, a bitter substance is sprayed inside the hood. If the person can’t taste it, the mask is doing a good job at blocking particles. If they can taste it, the mask needs adjustments, or another model or size is needed.
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