Wild Fires, Air Purifiers and Sound Systems

The following is a question for western audiophiles.

The current wildfires have caused so much devastation. Yet we are seeing increasing numbers of summers where we are forced to stay indoors because of hazardous air quality from fires.

Lots of folks invest in cleaning up their power supplies and treating their listening rooms for the best sound possible. When we replaced our HVAC last year, we chose a system with passive filtration and active purification. That has done a remarkable job, but my listening room which goes directly outdoors still suffered from some smoke infiltration. So we need to purchase a portable additional unit, and I put in an order for one (back order, because everyone has same idea). What I didn’t consider was the frequency of the fans (not that one can find those specs easily). Since these work best when run continuously, the noise they produce is hard to avoid.

Does anyone have a brand of air purifier, which, while in operation, is least disruptive to the music?

This may seem an absurd and privileged question to ask when so much life is at stake. In one sense, it is; but like COVID-19, we westerners are all going to have to learn to live with these periodic conflagrations. We might as well have the healing power of music to help.