Final answer:
Olfaction refers to the sense of smell. It is the ability to perceive and distinguish various odors. Our sense of smell plays a crucial role in our enjoyment of food and can affect our perception of taste.
Step-by-step explanation:
Olfaction refers to the sense of smell. Olfaction is the ability to perceive and distinguish various odors. It relies on olfactory receptor neurons in the nasal cavity that detect chemical compounds in the air, which then send signals to the brain for processing. Our sense of smell plays a crucial role in our enjoyment of food and can affect our perception of taste.