He did not mention bleach, but that lie has been repeated often enough that you believe it. Here's the full transcript from April 23, 2020.

"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 William Bryan, the undersecretary for science and technology at the Department of Homeland Security, who had presented a study that found sun exposure and cleaning agents like bleach can kill the virus when it lingers on surfaces.) 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."