A woman has been arrested on suspicion of attempted murder after knifing her husband over his smelly poos.

According to news.com.au reports, Emi Mamiya, 29, was arrested on suspicion of attempted murder after apparently slashing her husband’s face with the knife, police said.

Her anger was further fuelled when he tried to help their three-year-old son use the toilet “without washing his own hands first”, she said, Jiji Press and other local media reported.

“The toilet stinks so much that the child cannot even use it,” Jiji reported her as saying.