A new study reported by Medical Xpress suggests that the aroma of freshly brewed coffee may briefly improve mood, even before any coffee is drunk. The effect appears to be separate from the stimulation caused by caffeine, which is the psychoactive component most often linked to coffee's wake-up and pick-me-up effects.
The research was small, and the mood improvement was short-lived, so the results should be read as preliminary rather than conclusive. The study adds to a growing interest in how sensory cues, such as smell, shape the psychological experience of everyday products like coffee.
Because the source is a single report, there is no independent study to compare against. Still, the finding offers a plausible explanation for why the ritual of coffee, not just the caffeine, feels rewarding to many people.