In Chinese culture, and much of East Asia, the topic of 狐臭 (húchòu) is significantly more sensitive than “B.O.” is in the West. This is largely rooted in biology. The majority of people of East Asian descent have a variation of the ABCC11 gene, which results in dry earwax and, crucially, a lack of the specific chemical compounds in their sweat that bacteria feed on to produce strong body odor.
Comparison with Western Culture: In the West, having noticeable body odor is common, and the daily use of deodorant or antiperspirant is the norm. It's considered a minor issue of personal hygiene. In China, because noticeable body odor is the exception rather than the rule, 狐臭 is often viewed as a medical affliction or a serious personal failing. There is a large market for treatments ranging from special soaps to cosmetic surgery to “fix” the problem.
Related Cultural Values: This sensitivity is amplified by cultural values like 面子 (miànzi), or “face,” and an emphasis on social harmony. Emitting a strong, unpleasant odor is seen as a major social imposition, causing others to be uncomfortable and oneself to lose face. Therefore, individuals with the condition often experience significant anxiety and social embarrassment. It is absolutely not a topic to be brought up lightly or used to describe someone casually.