He did suggest drinking disinfectant and worse, injecting. It is all over internet if you haven't seen it. His words. "a good idea"
Actually, he didn't suggest drinking or injecting disinfectant. He suggested that doctors, as a possible treatment, could inject something to disinfect the inside of a person's body. I'm not sure exactly what he was talking about. It sounded stupid to me, but he didn't say, or imply, that anyone should drink or inject disinfectant.