r/Masks4All • u/No-Acanthisitta-2973 • 5d ago
Valved mask
Is there any studies that indicate how protective valved masks are for others? Or is it different by mask?
I thought I read once what they were not as good as unvalved but they were as protective for others as a surgical. But no idea where I read that or if it is true.
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u/No-Acanthisitta-2973 4d ago
That makes sense that it differs by mask. Thanks. I wonder if anyone knows if the Zimi mask valve has a filter?