Right mask campaign needed
We do. It's called an N95 mask. When worn properly it catches over 95% of airborne particles—mechanicaly & electrostatically.
It's excellent against Omicron and here is how it works:
N95 respirators are made of polypropylene material that go through a "melt blowing" process where it's melted & extruded through small-diameter holes into hundreds of tiny fibers (like spaghetti) that are tangled together. They block incoming particles
The fibers are then charged. This is done by passing them through device that produces static electricity. Like rubbing a balloon on your head, but it's permanent. The charge makes them 10 times better at capturing particles than material without charge. more