The challenge is how to purify the air. So the idea is to purify air by using water and some alcohol as COVID-19 do not live in the pure water. a traditional filter is also used to pure the air from any thing. So we can use it in hospitals and homes
as covid-19 is spreading in air so we decided to decrease the percentage of it in air even if in the places which are concentrated with people. space agency data helped us to know details about covid-19 structure and how to kill it. so we collected all these information and put them in one accurate filter.we used some alcohol,water, Quaternary ammonium compounds,pipes, suctions and a and a traditional filter to kill it.our achievement is to breath fresh air without fear from covid-19 virus.
https://legacyac.com/how-air-filters-air-quality-products-effect-viruses-like-covid-19/
https://advances.sciencemag.org/content/early/2020/05/11/sciadv.abc6891
https://www.consumerreports.org/air-purifiers/what-to-know-about-air-purifiers-and-coronavirus/
https://www.jpl.nasa.gov/edu/teach/activity/the-air-up-there-making-space-breathable/
https://americansaferoom.com/nbc-air-filter/airborne-disease-filter/