The member of the hard-left Momentum Black ConneXions group told a meeting at University College London on Thursday that “Smeethgate” should be known as ‘Smeargate’ because I was smeared”.
He claimed he was “expelled” from the party for “daring to challenge a right-wing Labour MP who was consorting with the Daily Telegraph”.
In response, Mrs Smeeth told the JC: "I find it astonishing that rather than apologising for his ignorant and offensive actions, Mr Wadsworth is trying to portray himself as a victim.
“The events of the Chakrabarti Report launch and the abuse I have received subsequently are a damning indictment of the bullying culture that has long festered on the British far left and is now sadly being allowed to seep into the Labour Party."
Mrs Smeeth is under police protection after receiving thousands of antisemitic messages, including death threats.
This article has been amended to update the text and headline