When a bottle of scent is kept open in a corner of a room its odour is felt in all parts of the room this is due to which phenomenon?

When a bottle of scent is kept open, its odor spreads throughout the room due to the phenomenon of diffusion. Molecules of the scent move from an area of higher concentration (near the bottle) to areas of lower concentration, gradually mixing with the air in the room. This movement occurs until the scent is evenly distributed, allowing its odor to be detected in all parts of the space.