Why a warm spiced aroma lifts spending in winter

A department store switched from its year-round floral ambient scent to a cinnamon-and-clove blend during winter. Dwell time rose and average transaction value climbed. The spiced aroma did not heat the air, but it heated the perception of it: cinnamon carries thermal associations — mulled wine, baking, fireside warmth — and the brain processed the scent as a warmth cue. The store felt warmer than its thermostat setting, and the perceived warmth made shoppers linger rather than rushing toward the exit and the cold street.

What everyone sees

A shopper enters a winter store and feels enveloped by warmth. The cinnamon scent is pleasant and seasonal. She browses longer than she planned. She credits her good mood, the holiday displays, the decorations — not the spiced aroma that made the air feel warmer than it was.

What is actually happening

Research on thermal-olfactory cross-modal effects shows that warm-associated scents — cinnamon, clove, vanilla — increase perceived ambient temperature and comfort. The effect extends to consumer behaviour: warmth-scented environments promote longer dwell time and higher spending, particularly in cold weather when the thermal comfort gap is greatest.

Why it stays hidden

The hidden mechanism is olfactory thermal compensation. The spiced scent closes the gap between the cold outdoors and the store’s thermostat by adding a perceptual warmth layer the HVAC cannot provide. The shopper feels warmer than the air justifies, and the extra comfort converts the winter visit from a quick errand into a leisurely browse.