Give an example of diffusion that is not candle

One example of diffusion that is not related to a candle could be the diffusion of perfume in a room. When a person sprays perfume, tiny particles of the fragrance are released into the air. These particles then move from an area of high concentration (around the person) to an area of low concentration (throughout the room) due to diffusion. Over time, the perfume spreads and becomes evenly distributed throughout the room, allowing others to smell it.