I disagree with a lot in this article, but hey it's good that four years into the pandemic the WHO *finally* recognizes that SARS-CoV-2 is airborne:
Now that that's out of the way, hopefully we'll start seeing governments act on implementing clean air protocols. More research is nice (hi Far-UVC), but the focus of governments worldwide really ought to be to roll out mechanical ventilation where possible, and HEPA filtration everywhere else. This should be standard.