I have worked in virology research labs for 28 years now, and we are not allowed to wear an N95 mask until we have been fit tested and verified a proper seal, which requires the proper brand and size for each person's individual facial structure. If you are not clean shaven, you will not get a proper seal. Annual fit testing is not only an OSHA requirement, but any intelligent employer will require it on their own for the safety of their employees. They are extremely uncomfortable to wear because of how tight they have to fit in order to achieve a proper seal, but they DO SEAL. And anything that will filter viruses as an N95 does will also filter dust.
Stop making false, misleading, and moronic statements.
You are ignorant and completely full of shit.
I have worked in virology research labs for 28 years now, and we are not allowed to wear an N95 mask until we have been fit tested and verified a proper seal, which requires the proper brand and size for each person's individual facial structure. If you are not clean shaven, you will not get a proper seal. Annual fit testing is not only an OSHA requirement, but any intelligent employer will require it on their own for the safety of their employees. They are extremely uncomfortable to wear because of how tight they have to fit in order to achieve a proper seal, but they DO SEAL. And anything that will filter viruses as an N95 does will also filter dust.
Stop making false, misleading, and moronic statements.