Question

Why the smell of hot sizzling food reaches at a distance but cold food we have to go near?

Answer 1

because the particles of hot sizzling food get outer energy from heat which increase the kinetic energy of particles so they move very fast as compare to cold food

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.