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  • Coronavirus FAQs: Are 3 Masks Better Than 1? Will Mouthwash Keep You Safe?

    NPR - 11/04/2020

    As correspondent Maria Godoy reported: Researchers at Northeastern University added an outer layer made from nylon stockings to a homemade face covering. They found that the nylon layer can boost a mask’s ability to filter out small particles in the air by creating a tighter seal between the mask and the wearer’s face.

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