The article make the claim that inward protection of masks, be it home made, surgical, or N95, provides some level of protection of breathing in the virus. The

The article make the claim that inward protection of masks, be it home made, surgical, or N95, provides some level of protection of breathing in the virus. The outward protection of masks from infectious persons, while useful, is relatively less. [1] https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0002618 https://journals.plos.org/plosone/article?id=10.1371/journal... (referenced in the article itself, I'm just reiterating the claim)