Extensive research has highlighted how one’s attachment style influences the development and maintenance of romantic relationships. Disgust is a construct that conceptually overlaps with attachment style given both include elements of behavioral avoidance. However, no previous study has examined how one’s attachment style may influence disgust-based avoidance of intimacy in romantic relationships. Therefore, the aim of the current study is to determine if adult attachment style is associated with olfactory disgust ratings towards eight body odor (BO) sources from their partner, previous partner, or others. The results revealed that disgust ratings of a partner’s BO differed depending on attachment style. Specifically, the participants with a dismissing-avoidant attachment style rated their partner’s BO as more disgusting than the secure, fearful-avoidant, or preoccupied styles. Moreover, participants with a dismissing-avoidant attachment style rated their partner’s and strangers’ BO equally disgusting whereas those in the other attachment groups rated strangers’ BO as more disgusting than their partner’s.