![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
![DVIDS - Images - Vilseck Army Dental Clinic installs HEPA air filters to fight COVID infection [Image 3 of 3] DVIDS - Images - Vilseck Army Dental Clinic installs HEPA air filters to fight COVID infection [Image 3 of 3]](https://d1ldvf68ux039x.cloudfront.net/thumbs/photos/2102/6532496/1000w_q95.jpg)
DVIDS - Images - Vilseck Army Dental Clinic installs HEPA air filters to fight COVID infection [Image 3 of 3]
![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)
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
![PROTECT COVID-19 National Core Study | How we know that HEPA filter based air cleaners are likely to be beneficial for reducing transmission of respiratory infections. PROTECT COVID-19 National Core Study | How we know that HEPA filter based air cleaners are likely to be beneficial for reducing transmission of respiratory infections.](https://sites.manchester.ac.uk/covid19-national-project/wp-content/uploads/sites/276/2022/09/air-filtration.jpg)