Ozone can kill the SARS-CoV-2 coronavirus in specific environmental conditions.
In December 2019, SARS-Cov-2, the coronavirus which causes the COVID-19 disease, was first identified in Wuhan, China. By March 2020, the virus spread to most continents and the WHO declared a global health emergency.
Multiple scientists, including virologists, began researching potential preventions of COVID-19. One study published by Luigi Cristiano in the Journal of Preventive Medicine and Hygiene examined if the ozone can effectively disinfect the novel coronavirus. Ozone is a gas made of oxygen molecules that can sufficiently inactive viruses by killing bacteria, fungi and molds. According to the research, direct exposure to ozone for 30 seconds in vitro can kill 99 percent of the virus.
Another study conducted by researchers at the Georgia Institute of Technology found that ozone could inactivate viruses on specific personal protective equipment, such as face shields and respirator masks.
However, both studied iterated that the effectiveness of ozone killing the virus depended on specific environmental conditions. For instance, the Georgia Institute of Technology study concluded that a "relative humidity of at least 50%" should be maintained while using ozone to kill the novel virus.
Therefore, ozone can kill the novel virus, albeit in specific environmental conditions.
The COVID-19 pandemic has given rise to a lot of potentially dangerous misinformation. For reliable advice on COVID-19, including symptoms, prevention, and available treatment, please refer to the World Health Organization or your national healthcare authority.