17/07/2020
Masks with valves are NOT advised.
These are known as one-way valves, with the filter functional only in one direction. As you inhale, the incoming air is filtered. As you exhale, the outgoing mixture of carbon dioxide, oxygen, water v***r and, yes, possibly COVID-19 viral particles releases unfiltered. These masks โmay actually propel your germs further.โ
Valved masks are advertised frequently online and often look both functional and fashionable. The buyer, meanwhile, probably doesnโt know they defeat the intended purpose โ to protect other people.
Cloth face mask is recommended in public when itโs difficult to maintain 6-feet social distancing. An N95 mask offers the best protection, but these masks have been reserved for healthcare professionals during the pandemic.
Please be guided.