Originally Posted by R8ers
If you have a propane leak the gas sinks to the floor and stays there risking an explosion, Natural gas is lighter than air and escapes to the atmosphere.
That is why they add the smell to propane, that pungent odor is an added smell, propane has hardly any smell otherwise.
Both propane and natural gas have an odor additive (usually Mercaptan).
If you have a gas leak in your house, you risk explosion whether you have natural gas or propane, because neither can escape.
And I've never seen an installation of a propane tank INDOORS. They're usually installed at least 50 feet from any dwelling.
I'm not an expert by any means but my dad worked for the LP company for 30-some years.