Sense of smell is strictly personal, study suggests
‘Olfactory fingerprint’ could be tough target for identity theft
![olfactory fingerprints](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2015/06/ss_olfactory_free.jpg?fit=860%2C460&ssl=1)
SOLE SCENTS “Olfactory fingerprints,” such as the two represented graphically above for two different people, represent a person’s individual sense of smell. Warmer colors represent greater perceived similarity between two odors.
Secundo et al/PNAS 2015