Health Canada suddenly being really good.
> Confirms that SARS2 transmits w/o symptoms
> Confirms it hangs in the air and is primarily spread via breathing
> Recommends correct filtration and masking
> Confirms it passes to your pets and that you should mask around them when sick
This is honestly the best guidance I've seen from a gov't agency in several years. Very pleased, tbh.
Here's the part on air quality: