Which statement is TRUE regarding the sense of smell?

Question

Which statement is TRUE regarding the sense of smell?​

Quizplus · Accepted Answer

When we smell something, volatile chemicals from that object evaporate and their remaining molecules get inhaled. This leads to the stimulation of olfactory receptors in our nose and we perceive a smell.

Option A is incorrect because research shows that humans can detect far more than 500 different scents. Some estimates suggest that we can detect up to 1 trillion scents.

Option B is also incorrect because humans can identify and name many more than 300 different scents. In fact, experts who specialize in identifying scents, such as perfumers or wine tasters, may be able to identify thousands of different scents.

Option D is incorrect because chemicals in the air do not interact with chemicals given off by the nose. Instead, they interact with olfactory receptors in the nose to produce a sense of smell.

Which Statement Is TRUE Regarding the Sense of Smell?​

Which Statement Is TRUE Regarding the Sense of Smell?