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I'm in Philly, where it smells like a campfire, and looks like a bad glam rock concert full of fake smoke and orange light.

I was swimming outdoors last night before this got worse (PM 2.5 was maybe 130 at the time?) and found myself wheezing, which is not something I've ever felt before outside of infections. Covid test negative, of course, ha! I thought the splashing around of water might help a little with the particulates just above the water surface... not much obviously.

Currently I don't smell smoke when I wear an N95 outside. It absolutely does help, since N/KN95's are designed to filter out 95% of particles 0.3 microns or larger. Better to stay inside and do the other behaviors Dr. Jetelina recommends.

PM 2.5 just hit 279 here. I have such a new appreciation for New Delhi, Shanghai, Mumbai, etc. So awful to live in this sort of poisoned air.

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Me too, speaking from NYC. Fascinating to see folks mask up again, and when I see that, I think, ah! So folks have figured out masks are helpful in a more generalized way. Ryan, I have been particularly thankful to you for putting me on to the CO2 monitor. As I can’t use ventilation via outdoor air while this is happening, what I can do is crank up my Coway air filters. The CO2 monitor is key for me to know when I have the air within a reasonable range. (The Coways are noisy at top speed, so it’s especially good to know when I can turn them down, get some peace and quiet and still breathe.)

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Long sleeves. I learned that the hard way.

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