Why does good food diffuse from a bag to your nose?

Good food diffuses from a bag to your nose because of the process of diffusion. Diffusion is the movement of molecules from an area of high concentration to an area of low concentration. In the case of good food, the aroma molecules are concentrated inside the bag, while the air outside the bag has a lower concentration of these molecules.

Therefore, the aroma molecules diffuse from the bag to your nose, allowing you to smell the food. This process is also assisted by convection, which is the movement of air currents. When you open the bag of food, the warm air inside the bag rises, carrying the aroma molecules with it. These molecules then reach your nose, allowing you to experience the pleasing scent of the food.