If Your Mask Has a Valve, It's Half Useless 16:23 Vitals Edit If you’re wearing a face mask with a little plastic valve embedded in it, you should know that valves compromise the effectiveness of the mask—and this is true whether your mask is a hardware-store N95 or a designer cloth mask. Read more... Share on Facebook Share on Twitter Share on Google Plus RELATED POSTS How Bad Is It to Eat the Same Thing...How to Get Rid of MaskneHow to Warm Up for a Cold Weather W...
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