The smell if hot sizzling food reached. Your several metres aways , but 2 get the smell from cold good you have to go close .

Dear Student,

The smell of hot sizzling food reaches us several metres away, but to get the smell from cold food you have to go close because the particles of hot sizzling food possess large kinetic energy and diffuse in air more rapidly and reach several meters away whereas particles of cold food possess less kinetic energy and are not able diffuse as fast.
This phenomenon is called Diffusion.
​​​​​​This is according to a relation
​$K.E = \frac{3}{2}RT where R is a cons\tan t and T is temperature$ (Will be discussed in Class XI)
Thus at high temperature, Kinetic energy of particles are more and they move faster. This is how we are able to smell hot food at a distance.

Regards
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