Direct quote: "Suppose we hit the body with ultraviolet light, and you said, that hasn't been checked, but we're gonna test it, and I said suppose you can bring the light inside the body, which you can do, either through the skin or in some other way, and I think you said you're gonna test that, too". Then he proceeds to talk about "disinfectant, which knocks it out in a minute". Crucially, at no point has Trump ever suggested anything like "injecting bleach", yet thanks to CNN and gullible people like you half the country believes he did.
I think realistically what happened is, Trump was bombarded with suggestions in his daily briefing, as usual, and used a poor choice of words to describe one of the suggestions. Contemporaneous evidence supports this: Atyu announced their work with Cedars Sinai a day or two before that press conference.
But feel free to believe the CNN version. By the way, I have some excellent build-ready swampland in Florida I'd like to sell. Interested?