Unestly have you been having unprotected sex defferent smell of odor can mean alot you dont take care of you vagina often or a vigina infection or also it could possibly mean stds go get tested if you are having unprotected sex if not still go get a vagina check up by your main doctor
Sometimes bacteria can get trapped in the folds of the skin. Try using a small amount of antibacterial hand soap to wash the area and see if this helps. good luck
Try a bubble bath and shaving your hair down there will make u fresh. Iam a big girl to. I think you will be pleased. You can try baby oil after u shave if u like so no itch.