The smell of hot sizzling food reaches you several metres away, but to get the smell from cold food you have to go close. Why?

The smell of hot sizzling food reaches you several metres away, but to

1.	The smell of hot sizzling food reaches you several metres away, but to get the smell from cold food you have to go close. Why?
Answer» the answer isExplanation:Because the hot air is lighter and cold air is HEAVIER so sizzling SMELL(hot air) reaches when we are so far but cold ITEMS (cold air)don't reach US when we are far away