How Dying from Air Pollution Protected Korea from Covid-19

Why KF-94 Masks Work Better

America you are if you’re only hearing about KF-94 masks after 420,000 coronavirus deaths. We watch in horror when you are blithely unaware that priority should be on mask filtration — not on fashion print masks that may be too porous to function. And that’s if you even wear masks at all. Instead of a whole year…