Use the idea of diffuseition to explain how the smell of perfume travel. ​

Diffusion is a process in which a movement of substance takes place from a high concentration area to a low concentration area due to the random movement of the particles.

The smell of perfume travel because the particles move from their high concentration to low concentration and mix with the gases present in the atmosphere.  Diffusion happens in gases more faster than liquids and solids because of the random movement of their particles.