Not impossible either: "A Cedars-Sinai research team is in the pre-clinical stages of developing a technology that harnesses intermittent ultraviolet (UV) A li

Not impossible either: "A Cedars-Sinai research team is in the pre-clinical stages of developing a technology that harnesses intermittent ultraviolet (UV) A light for treating viruses and bacteria. The technology has not been tested or used on patients. Cedars-Sinai has filed for patents related to the technology and has signed a licensing agreement with Aytu BioScience with the aim of potentially enabling near-term use as a COVID-19 intervention for critically ill, intubated patients." It was a suggestion to explore it (all possibilities).