Question

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

Answer 1

hey mate....

it is happening due to diffusion of perfume partical in air....after these particals spread out large distance or covered large area.... the that's why we get the smell of perfume several metres away...

i hope it will helps u.

Answer 2

hii....
we are able to get the smell of perfume sitting several metres away because of the diffusion of molecules that takes place. The molecules of the perfume diffuses with the molecular particles of air due to which the smell is passed over and reaches our nose...