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Sean Hannity aired a clip of controversial former Trump campaign aide Sam Nunberg being interviewed on CNN -- as the host said she smelled alcohol on his breath, and asked if he'd been drinking.

Nunberg, who on Monday vowed to ignore a subpoena from Special Counsel Robert Mueller, was on his latest of multiple interviews when the suspicion was raised.

Host Erin Burnett said Nunberg has been previously suspected of drinking alcohol in the White House, and asked him if he was intoxicated on-set.

"You're sitting very close to me, we talked earlier about what people in the White House were saying about you... Talking to you, I have smelled alcohol on your breath," Burnett said.

Hannity said Nunberg "appears to be having a national meltdown" ever since he announced his refusal of Mueller's legally-binding invitation.

Sam Nunberg:

•Began consulting for Trump in 2011

•Served for six weeks as an adviser to Trump's campaign

•Aug 2015: Fired from campaign after racist Facebook posts surfaced

•First Russia probe witness to openly promise to defy a subpoenahttps://t.co/fYT8QqCB5K — Fox News Research (@FoxNewsResearch) March 6, 2018

Nunberg said "nobody hates [Donald Trump] more than me" but added that "he campaigned his [expletive] off" and did not collude with Russia, the Washington Post reported.

In an earlier Monday interview, Nunberg reportedly claimed to have "invented" the "Muslim ban", the repeated campaign trail attacks against former Gov. Jeb Bush (R-Fla.) and the border wall initiative.

A source close to the Trump campaign told Fox News that Nunberg was fired twice “for good reason” and known to be erratic, referring to his media appearances Monday.

Nunberg was also the subject of a now-settled lawsuit, in which Trump sued the political consultant for $10 million and accused him of breaching a confidentiality agreement.

In regard to the subpoena, Nunberg said he was not going to spend a lengthy amount of time scouring his inbox for emails involving former White House adviser Steve Bannon and informal Trump adviser Roger Stone Jr.

In response to the Nunberg news, Stone told Fox News he expected Mueller to eventually ask for similar correspondence, but that he had "no knowledge or involvement" in any collusion with Russia.

UPDATE: NBC News reported late Monday that Nunberg would "probably cooperate with Mueller in the end."

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