Odor – Dreaming about odors is generally unimportant unless the odor is especially potent. It is thought to be impossible to actually smell while unconscious. However, there are many people who claim that they not only could smell in their dream, but they do it quite often. Smelling something malodorous in your dream is generally indicative of something negative. The converse is also true. If you smell something that gives you nostalgia in your dream it is symbolic of your past or that you have had this dream before. Important dreams are repeated several times until you are able to work through the problem that you are having.