Human sane smell or spatial memory is controlled by the same brain region.

A neuroscience study published in the British journal Nature Communications suggests that human santoms are associated with spatial memory and are controlled by the same brain region.
spatial memory refers to the ability to identify relationships between different landmarks and build cognitive maps in an environment.
has previously argued that animals initially evolved to smell to help them navigate the environment.
there is evidence that olfactory recognition may be associated with spatial memory.
, however, the evidence has not been directly verified.
, University of Macgill in Canada researcher Veronica Bobter and colleagues sought direct evidence of the association between olfactory recognition and spatial memory, and whether the two functions shared a brain region if the association existed.
, the team tested 57 volunteers and found that those who performed better on different odor recognition tests did better in the "path-finding" task, which required participants to navigate between different landmarks in a virtual town.
magnetic resonance imaging, the researchers found that the thickness of the left inner ventrline (mOFC) and the increase in the volume of the hippocampus on the right side of the brain raised the performance level of both tasks, suggesting that odor recognition and spatial navigation capabilities may be controlled by the same brain region.
in supplementary experiments, nine patients who had suffered brain damage and damaged the inner part of the left inner prefrontal cortex did not perform well in the task of olfactory recognition and spatial memory, compared with nine patients who also suffered brain damage but did not injure the left inner prefrontal cortex, without underperformance.
While further research is needed, the researchers believe the current results support the view that the initial function of smell may have been to support the ability to build cognitive maps and spatial memory.
Source: Science Daily.