Keep your nose clean

Keep your nose clean: manter-se fora de confusão, evitar “encrenca”

“Our son Michael is in trouble with the police again. I really wish he'd learn to keep his nose clean.”

“It's important for sport's stars to keep their noses clean because they make a lot of money for endorsing products, and they could lose this income if they got into trouble with the law.” (www.englishclub.com)