My best friend smells and thinks it's me..?

Ask your mom or grandmother if you should change your deodorant & cologne, because you are feeling insecure about your smell. They will be truthful with you & won't have an agenda. The next time your friend wants to spend the night, don't let her, and tell her why. Tell her you like to keep your room & your belongings nice & that it drives you crazy when she has it all in a mess. Last of all, the next time she makes a rude remark about your smell, tell her, "That's like the pot calling the kettle black!". Or, "People who live in glass houses shouldn't throw stones.". Both of these statements mean that the person accusing you is guilty of what they are accusing you of. You say your friend has some good qualities, but she has some really bad ones too. Sometimes you just have to cut your ties to a "friend" when their bad qualities outweigh their good ones. Truthfully, if I had a friend that announced to the shoppers in a store that I smelled bad, I wouldn't shop with her again. For some reason, she enjoys humiliating you. That is not a sign of true friendship. Good luck to you.