Dr. Noam Sobel: How Smells Influence Our Hormones, Health & Behavior | Huberman Lab Podcast

Smell Digitization

The concept of digitizing smell is gaining traction, with significant efforts underway to make it a reality. Noam Sobel highlights the work of his lab and others in developing rules that link odor structure to perception, akin to how color is linked to light wavelength 1. This research is driven by the increased awareness of smell's importance, partly due to COVID-19. Andrew Huberman envisions a future where digital scent technology could enhance sensory experiences, such as receiving the smell of blueberry pancakes through a computer 2. Sobel shares a recent breakthrough where his team successfully transmitted the scent of violets over IP, marking a significant step towards practical applications 3.

In many ways, COVID is going to be one of the best things that ever happened to olfaction research, because suddenly all the world is. All the world, lots of people are very cognizant of the importance of Smell.

--- Noam Sobel

   

Medical Potential

Digitized smell holds promise for revolutionizing medical diagnostics. Noam Sobel dispels the misconception that olfactory perception is highly subjective, noting that humans share a remarkable similarity in how they perceive smells 4. His lab's algorithmic framework can predict the perceptual similarity of molecular mixtures, paving the way for creating olfactory metamers—mixtures that smell identical despite having no common molecules 5. This breakthrough lays the groundwork for using digitized smell in health monitoring, potentially allowing for disease diagnosis through scent analysis.

Humans are incredibly similar to one another in their olfactory perception. And this is in contrast to which most people think.

--- Noam Sobel