Dear our followers,

Unfortunately, there is no available simple answer to this question so we will give two answers to this question.

1) Honest and responsible answer: We do not know.
Covid-19 (Sars-CoV-2) virus is a very new virus for all of us and we had very limited time to research about this virus before the pandemic had started. At the moment, there is no available academic research that proves ozone (or UV or other chemicals) could be used against Covid-19 virus.
On 19.03.2020 IOA (International Ozone Association) declared that;

The International Ozone Association (IOA) has received several inquiries regarding the effectiveness of ozone to disinfect water and surfaces for the coronavirus SARS-CoV-2 that causes the illness Coronavirus Disease 2019 (COVID-19). While ozone is highly effective for the inactivation of many viruses, the IOA is not aware of any research and testing that has been conducted specifically on the SARS-CoV-2 coronavirus. To the best of our knowledge, Peer Reviewed Research has not yet been completed and therefore definitive conclusions cannot be made regarding ozone inactivation of SARS-CoV-2.

So according to that information, can we jump to the conclusion that ozone is ineffective against COVID-19?
No.

Here is the second answer;

2) Ozone can potentially and theoretically be used against Covid-19 because ozone as a very aggressive and strong disinfectant was (and is) used as a virus decontamination agent in many fields. Additionally, James B. Hudson , Manju Sharma & Selvarani Vimalanathan in their article named “Development of a Practical Method for Using Ozone Gas as a Virus Decontaminating Agent” (2009) prove that ozone is very effective against Murine corona-virus which is also a member of corona-virus family.

In a nut shell, although we do not have enough academic evidence about the effectiveness of ozone against COVID-19, ozone has a very high potential to be used against COVID-19 as a decontamination agent.