Memory loss is often cited as one of the most worrying aspects of growing older. But what if the section of the brain that's responsible for memory could be stimulated by simply sniffing a few pleasant odors? There is extensive research pointing to a relationship between exposure to different smells and memory improvement. A clinical trial led by Prof. Michael Leon at the Department of Neurobiology and Behavior, University of California, Irvine, suggests the loss of olfaction can cause ...