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Understanding What Causes Grandma's Smell: The Science Behind the 'Aging Odor'

A 2001 study in the *Journal of Investigative Dermatology* first identified the key chemical compound behind age-related odor, 2-nonenal, which is often mistakenly linked to poor hygiene. Understanding what causes grandma's smell is a compassionate process of recognizing this natural physiological change and addressing it with dignity.