When in search of propane West Palm is an excellent place to start searching from. The gas is in the hydrocarbons family. At the atmospheric temperature, it exists in form of a gas but it is easily liquefied into a liquid by application of pressure. It is commonly called liquefied petroleum gas. This gas is colorless, non toxic and odorless. Odorants are added into it to give the rotten egg-like smell for simple detection.