Of course covid19 can spread through the air because viral droplets can be tiny. But infection-at-a-distance has not been demonstrated. The null hypothesis should continue to be that infection risk is proportional to viral exposure and time. An infected person can shed billions of viral particles per day, and yet, they don't infect that many people even if they're careless. The human immune system is remarkably good and it won't get overwhelmed when exposed to only a tiny amount of viral mass. The WHO hasn't accepted the conclusions from this paper because it doesn't provide evidence that simply exhaling produces sufficient viral mass to cause infection at a distance.

> Aren't we all going to catch this sooner or later...

Not necessarily. China and most of Europe have done a pretty good job of reducing spread to the point where it's likely that most people won't get it, assuming we get a working vaccine eventually.

In the U.S., we've flattened the curve but whether we end up with the "herd immunity" scenario where most people get it or one where we get spread under control and it slowly dies out depends on our actions in the coming months. (We also might get different outcomes in different parts of the country.)

> Aren't we all going to catch this sooner or later,

You can get it if you want. I'm gonna opt for the vaccine instead.