Year in review: The nose knows a trillion odors
Scent tests show precision of human olfactory power
![nose](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2014/12/16.jpg?fit=860%2C460&ssl=1)
THE NOSE KNOWS Humans can suss out more than 1 trillion different smells, a 2014 study estimated.
Chiyacat/Shutterstock
Scent tests show precision of human olfactory power
THE NOSE KNOWS Humans can suss out more than 1 trillion different smells, a 2014 study estimated.
Chiyacat/Shutterstock