Babies Smell Wonderful to Their Parents, Teenagers Do Not: an Exploratory Questionnaire Study on Children’s Age and Personal Odor Ratings in a Polish Sample

INTRODUCTION Infant body odor is subjectively pleasant to parents and activates reward areas in the brain. Hence, body odor perception might contribute to parental bonding. However, it is unknown whether the perceived pleasantness of children's body odor varies over the course of a child's development. METHODS Two hundred and thirty-five parents (M = 36.9 years, SD = 7.3) were asked to assess the personal odor pleasantness of their children (N = 367; M = 9.3 years, SD = 6.4). RESULTS Odor pleasantness was found to decrease as a function of children's age. Neither sex of the parent nor sex of the child contributed significantly to this effect. CONCLUSIONS We propose that the effect of age-related changes on personal odor pleasantness reflects olfactory modulation of parental-child relationships. IMPLICATIONS Our study suggests that perception of young children's personal odor as pleasant may contribute to bonding and thereby caretaking, which is needed to a lesser degree after puberty than before.