How to Use Smell to Transform Client Outcomes

Smell is often overlooked in movement and pain assessments, yet it is one of the most powerful tools for activating the brain!

The Olfactory System

The olfactory system, which processes smell, is directly linked to the limbic system—a part of the brain responsible for emotion, memory, and autonomic function. This connection makes smell a unique and efficient way to influence neurological states, such as calming an overstimulated nervous system or improving focus and alertness.

Smell also directly involves the olfactory nerve (Cranial Nerve I), which is the only cranial nerve with a direct route to the brain without passing through the brainstem. This unique characteristic means that olfactory input can produce quick, targeted responses, making it a powerful tool for both assessment and intervention.

Using Smell in Practice

Smell can serve as both a diagnostic tool and a way to support the nervous system. For example, introducing a stimulating scent, such as peppermint or citrus, can activate the olfactory nerve and provide valuable insight into a client’s sensory processing and cranial nerve function. If their movement or pain improves, it suggests that the nervous system is responsive to sensory inputs and may benefit from increased stimulation. You can try this between sets, before exercise or as active recovery etc.

On the other hand, if calming scents like lavender are used and symptoms ease, this indicates a need to downregulate an overactive system, offering a pathway for reducing stress or hypervigilance. Understanding the function of the olfactory nerve also opens the door to identifying underlying issues, as changes in smell perception may signal cranial nerve dysfunction, which can influence posture, movement, and overall neurological health. This might be good for a massage therapist or bodyworker before during and after a session or during the evening when wanting the family to start winding down.

Smell also bridges the gap between assessment and intervention because of its ability to impact multiple cranial nerves indirectly. For instance, changes in smell can influence the vagus nerve (Cranial Nerve X), which regulates parasympathetic responses like breathing, heart rate, and digestion (kind of important right?). By introducing specific scents, you can create a ripple effect that encourages nervous system safety and reduces pain perception. For clients experiencing fatigue or focus issues, stimulating smells can heighten alertness, while calming scents can help those struggling with tension and discomfort.

Leveraging the power of the cranial nerves through olfactory input allows movement professionals to access the brain more efficiently, supporting their clients’ outcomes in a targeted and holistic way. Watch this video to see it in action on my husband Ryan :)

Let me know if you’ll try this on yourself or with clients this week! I will catch ya next month.

Stay curious and be weird ;) Missy B