That applies to a medical or surgical mask. What about the N95 mask that would be protective against a virus, at least that's what's been said at least since the bird flu scare around 2006.
From what I understand, the N95 only protects against substances of 3 microns or more. The Coronavirues is 1 micron...
This can enter through the eyes. This is why China has people putting plastic bottles over their head
Masks could reduce the risk but not eliminate the risk.
Something is better than nothing. It might reduce your risk by a certain factor even if slim
I had a scare of this after some Asians were coughing all over me. Got sick. DId my protocol which included lipsomal C and hydrogen peroxide in my ears. Was better than next day.
Likely a cold. Headache, really runny nose, sneezing
But you bet I wondered if I had just got Wuhan