The quantum mechanics hidden inside your sense of smell

Science · Published 22 October 2026 Swipe more like this →

In short: How does a molecule of perfume become a memory? This video explores the transition from chemistry to quantum physics, explaining how our receptors actually process odors.

The video examines two primary models of olfaction: shape theory and vibration theory. While many believe smell is simply about the physical shape of molecules fitting into receptors, current evidence suggests that a combination of both theories is necessary to explain human scent perception.

A key component of this process involves quantum tunnelling. This means our nose relies on subatomic behaviors to detect odor molecules, bridging the gap between biology and fundamental physics.

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