According to CBS 7, the boyfriend, whose name was given as Robinson Pinilla-Bolivar, had approached his girlfriend while washing dishes in the kitchen and asked her to smell his armpit.
Following her refusal to smell his armpit, the girlfriend claims they got into a heated argument and Ponilla-Bolivar hit her on the back of the head with a clenched fist and then threatened her with a knife.
She then says he fled the scene, and she called the police.
The offending boyfriend was later arrested by the cops at a traffic stop and has been charged with aggravated assault.
In his defense, Pinilla-Bolivar claims he did not threaten his girlfriend but only threw the knife into the sink because he was angry over her refusal to smell his armpit.