Why is it that to smell cold food, we have to go close but the smell of hot food reaches us several meters away?
When the particles are at higher temperature, their movements are fast and therefore they can travel up to several meters. Hence the hot food’s smell will be reaching us several meters away. At lower temperatures, the movements of particles are not very fast and particles do not have enough kinetic energy to travel a distance of several meters. Therefore we have to go close to smell cold food.
