When you sniff some milk that's bad, you smell the horrible, sour smell. When freshly baked cookies come out of the oven, the smell is wonderful. All day, every day, your sense of smell is hard at work. Explore how your nose, nerve cells, and brain work as a team to bring you thousands of different smells.
When you sniff some milk that's bad, you smell the horrible, sour smell. When freshly baked cookies come out of the oven, the smell is wonderful. All day, every day, your sense of smell is hard at work. Explore how your nose, nerve cells, and brain work as a team to bring you thousands of different smells.
