Tanaijah Montra Burns, 21, who told officers she was eight months pregnant, was arrested on suspicion of felonious assault, according to the report.
The 23-year-old man told officers she held a steak knife to his cheek and proceeded to attack him with it, according to the report.
The victim reported he used a clothes basket to push Burns into a chair and suffered cuts while wrangling the knife away from her, according to the report.
He refused medical treatment for various cuts to his hands and arms.
Burns was taken to the hospital, where doctors confirmed the unborn baby was OK, according to the report.
The victim told officers he tried to plug the air freshener back in before she pulled the knife, according to the report.
Police said Burns was previously arrested for a similar attack against the same man.