Why do some people taste cilantro as soap?

Quick Answer

For some people, genetic differences in smell receptors make cilantro seem soapy or metallic. A common variant near the OR6A2 gene is strongly linked to this effect.

The Full Story

Cilantro contains aldehyde chemicals that many people perceive as fresh and citrus-like, but others detect as soap or bugs. Genetic studies have found that variants near the OR6A2 smell receptor gene are associated with this taste perception. Because smell and taste work closely together, the experience is often described as a flavor rather than a true taste difference. Culture and repeated exposure also matter, so people can sometimes learn to tolerate or enjoy cilantro even if they initially dislike it.

Key Facts

1.A variant near OR6A2 is linked to soapy cilantro perception

2.The effect is mostly about smell, not taste buds alone

3.Cilantro also contains aldehydes found in soaps and some insects

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