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Home/Science News/Facemasks block expired particles, despite leakage at edges, study finds Science News Facemasks block expired particles, despite leakage at edges, study finds 8th June 20210 33 Less than a minute Facebook Twitter LinkedIn Tumblr Pinterest Reddit VKontakte Odnoklassniki Pocket Read More 8th June 20210 33 Less than a minute Facebook Twitter LinkedIn Tumblr Pinterest Reddit VKontakte Odnoklassniki Pocket Show More Share Facebook Twitter LinkedIn Tumblr Pinterest Reddit VKontakte Odnoklassniki Pocket Share via Email Print