Question

when food is sizzling hot the smell of food comes far away to us but when food is cool the smell do not come . why ? give reason.

Answer 1

The reason for it is that the hot gas ( including the smell) diffuses fast while on the other hand, cold gas doesn't diffuse much. Hence the hot food's smell reaches us far away then cold food's smell.
Plz MARK IT AS THE BRAINLIEST

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.