Positive I had COVID in January of last year. Treated myself with ozone. Knocked it out within hours. Just made perfect sense to me, something extremely deadly to a virus like COVID and could hit all target areas where the virus was when inhaled, i.e the mouth, nasal passages, windpipe, and lungs. Of course ozone can do damage to tissue if you don't know what you are doing so "Don't try this at home kids" if you don't.
In before the shrieks of horror.
I recall reading that even simple saline nasal spray twice a day ‘could’ be beneficial.