New research has found that individuals who assign higher importance to smell and those more engaged in sniffing body odors of self and others tend to show greater sexual desire. The findings were confirmed on both sexes and across three countries. The study was published in the Archives of Sexual Behavior.
In mammals, the sense of smell serves various purposes, like finding food, identifying prey, and communicating with others through scent marking. Humans also use smell to identify potential mates through substances called pheromones. Studies show that people with a better sense of smell have more satisfying sexual experiences and more frequent orgasms. Scent helps in mate selection by identifying related individuals and preventing inbreeding.
In humans, studies show that individuals with better sense of smell have more pleasant sexual experiences and more frequent orgasms. Scientists believe that scent helps moderate mate selection by identifying related individuals, thus helping prevent inbreeding. Body odors also convey information on physical attraction. However, the subjective significance of the sense of smell in sexual functioning has not yet been sufficiently studied.
Study author Zi‑lin Li and her colleagues wanted to examine the relationship between subjective significance of the olfactory function i.e., the sense of smell, body odor sniffing habits and sexual desire among young persons. They hypothesized that people who attach more importance to smells and who engage more in sniffing body odors would show greater levels of sexual desire. They conducted two online surveys. The first one was done to test this hypothesis and the second one to see whether the findings hold in cultures outside China.
In the first study, 1,903 students from the Southern Medical University in Guangzhou, China, participated. The students completed questionnaires about the importance of smell, their sniffing habits, and their level of sexual desire. The results showed that students with sexual experience had stronger sexual desire scores than those without, and men generally had higher sexual desire scores than women. Women, on average, placed greater significance on smell and were more prone to sniffing their own and others’ body odors.
The study also revealed that students with higher sexual desire tended to attach more importance to smell and were more likely to sniff themselves and others. This connection was stronger among students with sexual experience. In students without sexual experience, stronger sexual desire was associated with both the importance of smell and sniffing behavior.
For the second survey, 313 Indian residents (200 women, average age 32 years) and 249 U.S. residents (139 women, average age 40 years) completed the same questionnaires. The results showed that U.S. participants reported having more sexual partners but less frequent sexual intercourse compared to Indian participants. Indian participants had higher sexual desire scores and placed more significance on smell. The relationship between sexual desire and smell measures was similar among both Indian and U.S. residents, just like in the first study with Chinese college students.
“The main findings of our study were as follows,” the researchers concluded. “First, women placed more importance on olfaction [sense of smell] and had a higher prevalence of body odor sniffing but a lower sexual desire than did men. Second, we found significant cross-cultural differences in individual significance placed on olfaction [sense of smell] and sexual desire. Third, individual significance placed on smell and the frequency of body odor sniffing were positively associated with sexual desire. More importantly, these correlations were consistent across sexes and cultures.”
The paper makes an important contribution to the scientific understanding of the links between sexual desire and smell. However, it should be noted that the study was based solely on self-reports and it included only three countries. Results obtained using observational measures and in other cultures might not be the same. Additionally, in the Chinese sample, 95% of participants reported having no sexual experience.
The study, “Sniffing of Body Odors and Individual Significance of Olfaction Are Associated with Sexual Desire: A Cross‑Cultural Study in China, India, and the USA”, was authored by Zi‑lin Li, Thomas Hummel, and Lai‑quan Zou.