1) Not all N95 masks are equal. Most are designed against non-biological agents, like dust and paint.
2) N95 Masks USELESS, Coronavirus Enters Body Through EYEBALLS, Warns Infected Doctor in Wuhan, China
3) Bio specific N95 masks, if you buy in bulk, are one time use and about $5 each.
your point #2 - the masks are not useless. They only help mitigate one of the entrances to the bodies. However, they are not useless.
Use a decent mask, goggles or glasses and ear plugs...cover any skin surface cuts. Wear long clothes and wash them after you get home ASAP. Take them off and put them in plastic bag before you enter the house.
N95 Masks USELESS, Coronavirus Enters Body Through EYEBALLS, Warns Infected Doctor in Wuhan, China
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Dude, that’s why they ALSO recommend frequent hand washes and REFRAINING from touching your eyes, nose and mouth.
I am skeptical that a particular brand of N95 mask is significantly more efficacious for a particular filtration milieu than others, beyond the N vs. P vs. surgical designation. I think it is mostly a matter of being able to claim testing in marketing. I guess we need a Consumer Reports lab to test and rate them. I am of the camp that anything you can do to reduce the viral load is desirable. If your full hazmat suit with coworkers to disinfect and help take down reduces the load by 100% , that's great, you're fortunate. If all the rest of us can attain is 80% over no protection at all, I'll take that.
+1
I needed to wear masks after my stem cell transplant for about a year. (I still wear them in hospitals and drs offices tho). Had zero immune system. For everyday wear, I used the cheapo ones. While in public, I wore these. I kept meaning to buy a reusable one, but never did.
Curad Antiviral Face Mask, 10 Count https://www.amazon.com/dp/B009GGUIK6/ref=cm_sw_r_cp_api_i_vIXmEbBVRD9CQ