What is the connection between smell and memory?

The connection between smell and memory is rooted in the brain's anatomy, particularly the close proximity of the olfactory bulb to the limbic system, which is involved in emotion and memory processing. When we encounter a scent, it can trigger vivid memories and emotions associated with past experiences. This phenomenon is known as the "Proustian phenomenon," named after Marcel Proust, who famously described how a specific smell could evoke detailed recollections. As a result, olfactory cues often serve as powerful triggers for recalling personal memories.