> He added: "I see the disinfectant that knocks it out in a minute, one minute. And is there a way we can do something like that by injection inside or almost a cleaning? As you see, it gets in the lungs, it does a tremendous number on the lungs, so it would be interesting to check that." [1]

There's video of this. He is 100% serious.

[1] https://www.nbcnews.com/politics/donald-trump/trump-suggests...