“In the Japanese study, when researchers did not tell participants what the odor was, they rated it as ‘inoffensive,’” Dr. [Johan] Lundstrom says. “But when they said it was from an old person, it was rated as ‘nasty.’”
— Dr. Lundstrom is with the Monell Chemical Research Center. Read more at Do Older People Have a Different Smell? at The New York Times.