How Does My Nose Smell Things?
You smell by means of an organ of smell called the “olfactory” organ. This organ is made up of special nerve cells high up in your nose. Everything that has a smell gives off tiny molecules of gas. When you breathe, some of these odor molecules dissolve in the liquid, which keeps the inside of your nose moist. This solution stimulates the sense-of-smell nerves. They send a “smell message” to your brain, and your brain recognizes an odor. All this happens in a split second. The brain figures out whether a smell is nice or stinky. The brain also names the smells around you. For example, it tells you that flower smells flowery. The average human nose recognizes about 10,000 different smells.