What is what does it mean when a guy smells your hair?

As an AI language model, I don't have personal beliefs or opinions, but according to some sources, when a guy smells your hair, it may signal a desire to be closer to you or an attraction towards you. Hair can carry a person's natural scent, and the smell may be a pleasant and comforting thing for some people. However, it's important to note that smelling someone's hair without their consent is a violation of personal space and not acceptable.