Question

Use the particle model of matter to explain why the smell of cooking can draft from the kitchen to living room even when there is no wind

Answer 1

Sizzling food particle have more energy so they travel fast

Answer 2

when food is heated, the particles of food get KE and the aroma of tge food spreads via diffusion which requires no flowing wind.
you must have observed that aroma is barely smelled when the food is cold due to low KE of the food particles.
hope this answers your question.