Trump: "A question that probably some of you are thinking of if you’re totally into that world, which I find to be very interesting. So, supposedly we hit the body with a tremendous, whether it’s ultraviolet or just very powerful light, and I think you said that hasn’t been checked, but you’re going to test it. And then I said supposing you brought the light inside the body, which you can do either through the skin or in some other way. (To Bryan) And I think you said you’re going to test that, too. Sounds interesting, right?"
"And then I see the disinfectant, where it knocks it out in one minute. And is there a way we can do something like that, by injection inside or almost a cleaning, because you see it gets in the lungs and it does a tremendous number on the lungs, so it’d be interesting to check that, so that you’re going to have to use medical doctors with, but it sounds interesting to me. So, we’ll see, but the whole concept of the light, the way it kills it in one minute. That’s pretty powerful."
He suggested the idea of brainstorming a way to inject disinfectant into the blood. It was then later revised that (surprise) he was being "sarcastic" when he had no reason to be. Given the context of his conference and the context in which he was saying this, it sounds like he was (as always) trying to be smarter than he was. No one was laughing. Not his supporters, not anyone. His staff got visibly uncomfortable when he said this.
“If you inject bleach or ammonia or any disinfectants, it automatically starts to kill the lining of your blood vessels and your blood cells and your organs.” Household disinfectants such as Lysol work by destroying the outer layer of a virus, and they can be toxic to human cells."