Dr. Anthony Fauci, the nation’s leading infectious disease expert, said Monday evening he was extremely worried by former President Donald Trump’s dangerous April suggestion that ingesting disinfectant could possibly be used to treat Covid-19.

“I just said, ‘Oh my goodness gracious.’ I could just see what’s going to happen,” Fauci told CNN’s Erin Burnett on “Out Front” of Trump’s suggestion.

“You’re going to have people who hear that from the President and they’re going to start doing dangerous and foolish things, which is the reason why, immediately, those of us who were not there said, ‘This is something you should not do.’ Be very explicit. The (US Centers for Disease Control and Prevention) came out, I think, the next day and put in one of their publications, ‘Do not do this.'”