Question

the smell of hot sizzling food reaches you several meters away,but you have to smell the cold food you have to go close.why?

Answer 1

Because the hot sizzed food have extra energy in the form of latent heat of vaporization and its travels in the gaseous form and reaches our nose where is the cold food have not any type of extra energy and it was not able to travel in gaseous form in air or atmosphere

Answer 2

When molecules of some volatile substances from hot sizzling food diffuse into air and reach the odur sensitive part of our nose we have the perception of smell.

At higher temperature of molecules diffuse into air at a faster rate and therefore travel long distances.

Hence the smell of hot sizzling food reaches as quickly even when we are several metres away.

While on the contrary , when the food is called the vapour diffuse is at a slower rate and therefore does not travel longer distances.

So, one has to come closer to have the perception of smell.