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KARE 11 Investigates: Do expensive air purifiers really kill COVID? | kare11.com
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To keep dining rooms busy this winter, restaurants invest in air purification - Minneapolis / St. Paul Business Journal
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Omicron: How schools can apply for DfE air purifier units | Tes
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Social media and duct tape are helping people make DIY air purifiers that filter out wildfire smoke | WGN-TV
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Can an air purifier kill COVID-19? | CTV News
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3M Recalls Filtrete Room Air Purifiers Due to Fire Hazard | CPSC.gov
Wind tunnel‐based testing of a photoelectrochemical oxidative filter‐based air purification unit in coronavirus and influenza aerosol removal and inactivation - Qiao - 2021 - Indoor Air - Wiley Online Library
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