Brazilian mayor suggests Covid-19 treatment using rectal ozone application

The mayor of the Brazilian city of Itajaí, Volnei Morastoni, said Monday the city would offer rectal ozone therapy for patients with Covid-19.
The city already provides ivermectin and camphor as preventive options. Also, the antibiotic azithromycin is offered as a treatment for infected patients.
According to the mayor, who is also a doctor, ozone should be applied to the anus of symptomatic patients of Covid-19, a few minutes a day, in different sessions. The statement was broadcast during a Facebook Live from the city hall.
"It is a simple, quick application, of two, three minutes a day. It will probably be a rectal application, which is very easy, very fast, [with] a thin catheter and this gives an excellent result, [...] it helps very much in the positive cases of coronavirus "
The treatment has no proven effectiveness against the new coronavirus.