Our sense of smell and our breathing are more closely connected than we might imagine.
A study published in Nature Communications in October 2024 explored this relationship by monitoring the breathing patterns of 52 people over 24 hours: 31 with a normal sense of smell and 21 born without one, a condition known as congenital anosmia.
The researchers found that participants with a functioning sense of smell produced approximately 240 additional inhalation peaks per waking hour. These small variations in nasal airflow may reflect unconscious exploratory sniffing — the way our noses continually sample the surrounding environment.
Other differences in breathing patterns persisted even during sleep. By analysing respiratory airflow alone, the researchers could distinguish between the two groups with 83% accuracy within the study.
Breathing as a Sensory Experience
For those of us who work with aromatic plants and perfumes, the relationship between breathing and smelling is fundamental. In my courses, I often describe breathing as a precursor to the experience of scent: we cannot fully separate one from the other.
What makes this research particularly interesting is the suggestion that olfaction may influence not only our conscious perception of fragrance but also the subtle rhythms of breathing itself.
The study does not establish that pleasant scents improve breathing or well-being. It does, however, offer a fascinating perspective on the relationship between our sensory abilities and the body.
And perhaps it invites a more personal reflection.
When we encounter a fragrance we love, we may feel drawn to pause, inhale and pay attention. A leaf, a flower or a freshly cut fruit can become an invitation to reconnect with the present moment.
To smell is also to make room for an encounter with the world.
In a life increasingly mediated by screens and technological devices, taking a moment to explore a natural scent can be a simple way of returning to direct sensory experience.
