IV hydrogen peroxide (bleach) kills viruses & cancer?
https://www.scpr.org/news/2017/09/05/75250/iv-hydrogen-peroxide-an-unproven-therapy-that-coul/
https://www.thelancet.com/journals/lancet/article/PIIS0140-6736(01)11118-9/fulltext
It seems that high doses of Vitimin C metabolises into hydrogen peroxide (bleach) in the body. Claimed by many to kill viruses and cancer cells. Is that what potus was hinting at?