There are plenty of viable ways to disinfect closed spaces, like cold plasma generation [0] or UV light disinfection [1]. [0]: https://drexel.edu/now/archive/2

There are plenty of viable ways to disinfect closed spaces, like cold plasma generation [0] or UV light disinfection [1]. [0]: https://drexel.edu/now/archive/2020/April/cold-plasma-filter-covid-19/ https://drexel.edu/now/archive/2020/April/cold-plasma-filter... [1]: https://www.cnet.com/health/can-uv-light-protect-you-from-covid-19/ https://www.cnet.com/health/can-uv-light-protect-you-from-co...