[willk]

I think it was a dumb statement by Trump but then there is this:
https://bestlifeonline.com/nasal-irrigation-covid-19/

The recommendation is a nasal irrigation with povidone-iodine to reduce viral load in the nose and sinuses.

[this is my country]

There is also this:

https://centerforintegratedmed.com/bio-oxidative-therapies/hydrogen-peroxide-ivs/

Peroxide is an antiseptic not to be ingested unless in the right form.