RoseTracker| Tracking new (and highly technical) research on how the brain processes what the nose smells, we found this gem of a 2009 study confirming that particular scents of childhood leave a major impression on our brains.
For better and for worse, first scents enjoy a “privileged” status in our brains, a sense response unique to odor and not sound.
Foul odors made a more lasting impression than pleasant ones.The smell correlation was so consistent that researchers working with Yaara Yeshurun of the Weizmann Institute of Science in Israelcould predict reactions in the later brain scans with complete accuracy based on the first set of brain scans.
The findings suggest that two brain regions, known as the hippocampus and amygdala, together can make a smell-related memory “special”. Dr. Yeshurun said she hopes that eventually her research “may help us generate methods to better forget early and powerful memories, such as trauma. ” via Science Daily