Wash that area 😖

Sooo I've had SO many friends who have told me that you aren't supposed to wash your vagina... Which sounds really disgusting to me. I mean, we all sweat in that area and have stuff coming out of it so how do people not know this? You shouldn't use harsh soaps. Unscented, maybe a baby wash. Has anyone else heard this before? Keep in mind these people are like 20 years old too..