Question

we can get the smell of perfume sitting several metres away why​

Answer 1

We can get smell of perfume sitting several meters away. The reason behind this is Diffusion.

But what is diffusion?

Diffusion is the intermixing of particals from higher concentration to lower concentration.

How diffusion is done in case of perfumes?

When we spray perfume, deo, air freshener or anything similar to it , the particals of that perfume get intermixed in the air present around us and due their continues Motion and movement we can feel the smell even sitting several meters away.

Answer 2

ANSWER:-

we can get the smell of perfume sitting several metres away this proves the characteristics of particles of matters they are continuously moving. The gaseous particle shows the rate of diffusion.