A Skittle's flavor reaches you through more than your tongue

Why a Nose-Pinched Skittle Loses Its Identity

A Skittle still tastes sweet and tart when you hold your nose, but much of what makes one color seem like one fruit and another like a different fruit becomes harder to detect. The tongue registers basic tastes such as sweetness and sourness; it does not identify “strawberry” or “orange” on its own.

Flavor Arrives Through the Nose

While you chew, volatile aroma molecules escape from the candy and travel from the back of your mouth up into your nasal cavity. The brain combines that smell with the tongue’s basic taste signals and other sensations, such as texture, to build the experience we call flavor. This route from mouth to nose is called retronasal smell.

Pinching your nose interrupts much of that route. The candy’s sweet-tart foundation remains, but the aroma cues that help distinguish its fruit identities are muted. Release your nose, and those cues can reach the smell receptors again—making the differences seem to return.

Color Helps Set Expectations

The bright colors also give the brain a clue about what flavor to expect. That expectation can shape perception, but it is not the same as taste itself: color cannot replace the aroma signals lost when your nose is blocked. The little experiment reveals how a familiar candy’s flavor is assembled—not just tasted on the tongue, but recognized by the brain from several signals at once.