People respond to the sense of smell on an emotional level more strongly than with any other sense. In fact, a single aroma can trigger forgotten memories and induce feelings similar to those experienced at that time.
This action involves a very complex process to do with the Limbic system; an area of the brain associated with smell and memory. The olfactory nerves are located at the forefront of the brain and are responsible for sending signals about what we smell through to the Limbic System. This sensual information is then compared to that stored within the memory, and the emotional response that went with that particular smell. This reaction then triggers a variety of chemical actions within the body, including the release of specific chemicals that relaxes, calms, or stimulates both body and mind.