The masks with an exhaust valve are all the rage because the air in the mask stays less hot/humid if you don’t have to exhale through the filter body; BUT only your inhalation gets filtered.
THIS PROTECTS ME FROM YOU, BUT NOT YOU FROM ME
It’s being Exposed* that this kind of mask only does half the job. It protects you but does not protect others from you. Your aerosols escape unrestricted, unfiltered and as infectious as if you had no mask. There will be a huge stink about this disclosure.
EVEN THE MIGHTY N-95 IS DEEPLY FLAWED BY AN EXHAUST VALVE
is already on the case:
Experts are warning the public against wearing certain types of N95 face masks with front valves.They say the masks protect the people wearing them but do not stop virus droplets from escaping and infecting others.These masks are designed for construction workers to use to keep out dust…