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ALSO be aware masks like that have one-way valves to make exhalation more comfortable. They're just a little rubber flap so the exhaled air is not filtered. So
by imglorp 7y ago
ALSO be aware masks like that have one-way valves to make exhalation more comfortable. They're just a little rubber flap so the exhaled air is not filtered.
So construction mask like that might catch some inhaled droplets but won't do protect others from exhalation if the wearer is ill.
- dTal 7y agoI would imagine they will offer a similar protection to a surgical mask, which also cannot "filter" outgoing air as there is no seal; it's just a line-of sight protection, perhaps helped somewhat by absorbing moisture droplets. A piece of tissue paper inside the valve would probably have the same or better effect, if you could persuade people to do that purely for the benefit of others.