Olfaction is the sense of smell, allowing us to detect and identify different odors in our environment. This ability is crucial for many aspects of life, such as enjoying food, recognizing danger, and even forming memories. Our noses contain special cells that pick up scent molecules, sending signals to the brain to interpret these smells. The process of olfaction begins when we inhale air, which carries tiny particles from flowers, food, or perfumes. These particles bind to receptors in the nasal cavity, triggering a response in the brain. This is why a whiff of freshly baked bread can evoke warm memories or feelings of comfort.