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Study shows N95 respirators could offer robust protection from wildfire smoke AGU Newsroom Heavy smoke from hundreds of Canadian wildfires is drifting south across the border into the U.S., turning overcast skies yellow and brown and threatening the health of those breathing it. The When Air Quality's Bad, Which Mask Should I Wear for Wildfire Smoke? KQED Can Surgical Masks Block Cigarette Smoke? Armbrust American The N95 Mask: A User's Guide

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