不干不净，吃了没病 (不乾不淨，吃了沒病) bù gān bù jìng, chī le méi bìng

bù gān bù jìng, chī le méi bìng phrase a little dirt never killed anybody; a couple of germs won't do you any harm
Domain: Proverb 谚语
Notes: (CC-CEDICT '不乾不淨，吃了沒病')