What immediate physical reaction results directly from the release of volatile ITCs when wasabi is crushed?

Answer

That sharp rush up the sinuses

The highly distinctive sensory experience associated with wasabi—the immediate, sharp rush felt moving upward through the nasal passages—is a direct physical manifestation of the volatile isothiocyanates (ITCs) being released into the air upon preparation, such as grating the rhizome. This acute physical reaction is what many consumers seek out when pairing wasabi with sushi or other dishes, as this fleeting heat signals the presence of these active, pungent chemical compounds.

What immediate physical reaction results directly from the release of volatile ITCs when wasabi is crushed?
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