How do you tell a friend that their body odor is not that great?

This is a very unusual case of bad smell. A friend in college used to wash her hair with sour curd. I admit that her hair was healthy and shiny, but the smell was unbearable. She would come near us and invariably flip her hair, leaving us gasping for breath. But when things got unbearable, we asked her the secret of her lovely hair. When she told us about the sour curd funda, all of us shouted in chorus, “But it stinks”. She was confused. She smelt her locks and agreed that it was unpleasant. Since then, she stopped using curd on her hair.Just tell your friend openly i am sure he will understand that you are saying it for his own good.

Well first of all when you are out with him, just say what is that smell.Its not me I take a bath every day and change my clothes.I wonder where that smell is coming from. Maybe he will get the hint.