vapors are a gas like substance which is made out of multiple kinds of atoms, but gas is a gas which is made out of a single substance.
example: water vapor: Hydrogen + oxygen
Gas : Oxygen gas : Oxygen
Their densities
fumaroles
Smoke is a mixture of gases, solid particle, liquid particles, water vapors and air.
These gases are: nitrogen (78,084 %), oxygen (20,9476 %), water vapors (variable concentration), argon (0,934 %), carbon dioxide (0,0314).
Percent composition is usually expressed as a percent by mass, but in the case of gases and vapors, it is often expressed as a percent by volume.
The molecules remain identical (for example ice, water, vapors).
Water Vapors.
These gases are nitrogen, oxygen, argon, other noble gases, carbon dioxide, water vapors.
fumaroles
Their densities
They sink below the air.
The premise of the question is incorrect, so "why" is irrelevant. You appear to be making a novel distinction between "vapors" and "gases" that I have never heard before.
The active gas in the air is HYDROGEN
Cooking technically adds greenhouse gases. The vapors and gases produced through the cooking process do add to greenhouse gases, but certain methods of cooking are worse than others.
Smoke is a mixture of gases, solid particle, liquid particles, water vapors and air.
Smoke inhalation is breathing in the harmful gases, vapors, and particulate matter contained in smoke.
Air is a homogeneous mixture.As it contains gases and water vapors in a uniform composition