![We should install air purifiers with HEPA filters in every classroom. It could help with COVID, bushfire smoke and asthma We should install air purifiers with HEPA filters in every classroom. It could help with COVID, bushfire smoke and asthma](https://images.theconversation.com/files/416670/original/file-20210818-23-1jcg1ix.jpg?ixlib=rb-1.1.0&rect=0%2C0%2C5915%2C3922&q=20&auto=format&w=320&fit=clip&dpr=2&usm=12&cs=strip)
We should install air purifiers with HEPA filters in every classroom. It could help with COVID, bushfire smoke and asthma
![Instant HEPA Air Purifier with Multiple Quiet Fan Speeds, Clean Air Coverage up to 1140 sqft, Removes 99% of Dust, Smoke, Odors, Pollen & Pet Hair, Charcoal - Walmart.com Instant HEPA Air Purifier with Multiple Quiet Fan Speeds, Clean Air Coverage up to 1140 sqft, Removes 99% of Dust, Smoke, Odors, Pollen & Pet Hair, Charcoal - Walmart.com](https://i5.walmartimages.com/asr/ed658529-c2f3-449f-8591-249a1a8eedc1.99ad907b8b83c4841f6f650adc3166ce.jpeg?odnHeight=768&odnWidth=768&odnBg=FFFFFF)
Instant HEPA Air Purifier with Multiple Quiet Fan Speeds, Clean Air Coverage up to 1140 sqft, Removes 99% of Dust, Smoke, Odors, Pollen & Pet Hair, Charcoal - Walmart.com
![Can 10× cheaper, lower-efficiency particulate air filters and box fans complement High-Efficiency Particulate Air (HEPA) purifiers to help control the COVID-19 pandemic? - ScienceDirect Can 10× cheaper, lower-efficiency particulate air filters and box fans complement High-Efficiency Particulate Air (HEPA) purifiers to help control the COVID-19 pandemic? - ScienceDirect](https://ars.els-cdn.com/content/image/1-s2.0-S0048969722029813-ga1.jpg)