DIY Air Cleaners to Reduce Wildfire Smoke Indoors

Note to Jeremy: you have these in PDF in case the Feds take it down

https://www.epa.gov/air-research/research-diy-air-cleaners-reduce-wildfire-smoke-indoors

https://www.epa.gov/sciencematters/do-it-yourself-air-cleaners-making-cleaner-air-more-accessible

Links:

https://www.airnow.gov/?city=Portland&state=OR&country=USA

Research on DIY Air Cleaners to Reduce Wildfire Smoke Indoors US EPA