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Why Does My Husband Suddenly Smell Like an Old Man? The Surprising Reasons for Age-Related Odor

According to a study published in the *Journal of Investigative Dermatology*, a specific chemical compound called 2-nonenal is responsible for the 'old person smell' and tends to increase in individuals over the age of 40. This natural biological process might be the reason why your husband suddenly smells like an old man, but there are also other potential causes to consider, from lifestyle factors to underlying health conditions.