[Covid-scam]
Respirator, 4 layers (filters)of brass, plus a Hepa filter. Aside from the standard activated charcoal.

I wanted copper, but they sent brass. But if this is copper-zink, should do the same.
Copper contact-kills most bacteria and viruses fairly rapidly.

Covid-19 is fake. Coronavirus has a 99.7% survival rate. All bullshit. But if you actually wanted to protect yourself. Here is a practical example.

Studies demonstrate that Hepa filters (or p100 if you wear 3M gear) are good in protecting users from nanoparticles with sizes down to 2.5 nm.

HEPA (High Efficiency Particulate Air filter; 99.97% efficiency for 300 nm particles.

Example:
Arenavirus 100nm (nanometer)
Escherichia coli 2um (micrometer) (2000nm)
Coronavirus 100nm