In ancient history, perfume was used for religious ceremonies, burials, and as a status symbol. When we smell different perfumes they reminds us of past experiences. Maybe the smell in your dream reminds you of a parent or grandparent or someone you looked up to . Whatever memory the perfume elicited it is likely a sign to think deeper about the gifts the person wearing the perfume was trying to share with you to help you become a better version of yourself.