Ozone gas (O3) has the ability to kill viruses and bacteria. But at present, there is no research to support that it can kill the corona virus 2019.
However, during the SARS outbreak in 2003, ozone was used to kill SARS-CoV-1. This is in the same family as SARS-CoV-1, it is possible that Ozone can also kill the COVID-19 virus.
Note: Ozone drying is recommended only for equipment such as air tubes and masks. Ozonating the CPAP/BiPAP machine is not recommended.