An NYU doctor who claimed her sex-obsessed boss fired her for putting an end to their romps was really canned because she acted bonkers toward co-workers, court papers charge.

Dr. Irina Mikolaenko, who was an assistant professor in the pathology department at NYU Langone Medical Center, barraged colleagues with profanity-laced emails in which she talked about assault rifles and Russian roulette while calling the school’s higher-ups “Nazis,” according to documents filed in Manhattan federal court.

“In grade 2 in school i could take apart AK47 in much less then a minute. See you all on Wednesday,” she allegedly wrote in a Jan. 13, 2014, email to colleagues including Dr. David Zagzag, whom she is suing for allegedly pressuring her for sex in exchange for positive job reviews.

In other emails, Mikolaenko referred to bosses as “Nazis” and accused a co-worker of going to her grandmother’s house in Ukraine on behalf of Joseph Stalin and playing Russian roulette with her mother, the papers say.

She also peppered a colleague with eight emails over two hours after he asked her to stop contacting him, court papers say.

“(AND THE EMAILS WILL STOP!!!!!!!!! YEEEEEEEE EMAILS WILL STOP TO THOMAS!!! YEEE NO MORE DISRUPTIONS FROM IRINA WHO ‘DOES NOT THINK PRIOR TO EMAILING’ HA, HA,” she allegedly wrote, adding that he was an “FAH,” initials for “f- -king a- -hole.”

In her tamer emails, she called co-workers “nasty, crazy, stupid, smelly, stupid, deceitful” and “arrogant and very difficult and weird,” the documents say.

At her most vicious, she emailed a colleague, “Again dayly prayers for cancer in your families from me,” the papers say.

But, the documents note, her emails don’t contain a single complaint against Zagzag.

Mikolaenko filed a lawsuit against the doctor and NYU in Manhattan federal court in January. In it, she accuses the married chief of her department of forcing her to have sex with him in an office and lab and says he told her he got an erection just by listening to her voice mail.

Zagzag’s lawyers filed the wacky emails as part of a motion to dismiss the sexual-harassment and discrimination suit.

They argue in the papers that Mikolaenko frequently sang Zagzag’s praises and even leaned on him for help with “her increasingly problematic interactions with her co-workers.”

Her emails prove “she had no hesitation or concerns raising any kind of complaints about her co-workers; that she never raised any allegations or any concerns of any kind about Dr. Zagzag,” the documents say.

In fact, the papers say, she urged a colleague to “be grateful to Dr. Zagzag” in an email dated Nov. 6, 2014, around the time she alleges he was harassing her.

She was fired in February 2015.

Her lawyer, Matthew Blit, said the new filings were nonsense.

“Mark my words, this motion is just a smoke screen and is guaranteed ‎to be denied by the court,” he said. “Dr. Zagzag can not deny my client’s claims as my client has significant proof of Zagzag’s actions.”

Despite these emails, there’s still a history of bosses harassing their employees: