Masks ==!!
This may well be a step too far in conceptual reasoning, for the generic Anon cluster flock here?
That said, this is about the use of, or effectiveness & reason for the use of a functional respiratory apparatus.
Not saying I'm on board, with this disseminator of talking points, which lacks any research links!
Just backing 'Common Sense' & 'Logic', which usage is increasingly, in shorter & shorter supply!
https://advances.sciencemag.org/content/early/2020/08/07/sciadv.abd3083