This is pretty interesting. It made me think that maybe in the end we'll see that the way the pandemic was finally brought under control was through a bunch of things, not just a single thing? It seems like many people are thinking something like "once we get a vaccine it'll be over", which might be true. But maybe it'll be a vaccine, and masks, and something like this, and advances in air filters and a dozen other things that just finally stamp it out, or reduce it to a level where we don't need to think/worry about it. And maybe at the same time that'll help greatly reduce the common cold, the flu, and maybe other things?