Synopsis

Source of validity: Traditional
Rating (out of 5): 1

Benzoin, a resin derived from trees in the genus Styrax, has a long history of use in traditional medicine and perfumery, particularly in Asia and the Middle East. Its aromatic properties made it popular in incense and as a component in various preparations aimed at "cleansing" or "opening" the airways. In folk practices, inhaling benzoin smoke or vapor was sometimes believed to ease breathing or soothe the respiratory tract, which could indirectly affect the sense of smell by clearing nasal passages. However, there is little to no direct historical reference to benzoin being used specifically to support or enhance the sense of smell ("smell body system") itself; rather, its use is more broadly associated with respiratory comfort and ritualistic purposes.

From a scientific perspective, there is scant evidence to support any significant pharmacological effect of benzoin on the olfactory system. Modern research has focused mainly on its antimicrobial and anti-inflammatory properties when used topically, rather than any effect on olfaction. There are no well-conducted clinical trials demonstrating that benzoin improves or supports the function of the sense of smell. Thus, while its use is justified primarily by tradition, the evidence for its efficacy in this specific context is weak, meriting a low rating.

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