[tyu2]

Is it really important though, as the only solution is still just HEPA filter. Expensive air filters usually have dust sensors/particle counters in them, so there is some indication when the air is dirty and, you know, anything PM2.5 is harmful either way.

[pcmaffey]

That’s been my thought to date, just investing in air filters instead. We’ve got several. But we’re still not sure whether it’s a good idea to be there at all.