Question

How does the smell of the cooked food reach our nostrils ever without entering the kitchen

Answer 1

this occurs due to diffusion ( movement of particle) so this we feel the smell of cooking food even without entering the kitchen

Answer 2

Explanation:

Hot air travels faster than cool air, because it is lighter than cool air.Smell(food) molecules are hot, so they reach our nostrils by travelling faster than normal air.