Former Vermont Gov. Howard Dean, a one-time presidential contender and former chairman of the Democratic National Committee, is defending a tweet he published Monday night suggesting Donald Trump might be a “coke user” because of his frequent sniffing during the presidential debate with Hillary Clinton.

The Republican presidential nominee did sniffle frequently throughout the event, which led many social media users to sound off on the development, even trending the hashtag #TrumpSniffle.

While Dean, a medical doctor, said in an interview on MSNBC Tuesday that he was not suggesting Trump might have a cocaine addiction, he seemed to go on to do just that.

“Well, you can’t make a diagnosis over the television, I would never do that, but he has some interesting — [sniffling] is actually a signature of people who use cocaine,” Dean said. “[H]ere’s the interesting consolation: He sniffs during the presentation, which is something that users do.”

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