5. Can wearing multi-layer masks better prevent novel coronavirus infection? Wearing one mask is fine, wearing three or four masks will make people breathless, because the air cannot enter the nasal cavity from the front, only from the side, but will not have a protective effect.

In addition, N95 masks are not necessarily required, and ordinary disposable medical masks can also block the transmission of droplets.

"Novel Coronavirus Infection Protection" 5. Can wearing multi-layer masks better prevent infection? I am hitting it in my hand, please wait a moment,

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