3 ms·
True for cheap surgical masks, definitely not true for N95 or P100 masks with HEPA filters. If you are carrying for a sick person in your home or in a hospital
by panarky 7y ago
True for cheap surgical masks, definitely not true for N95 or P100 masks with HEPA filters.
If you are carrying for a sick person in your home or in a hospital, you need a quality mask and eye protection.