On Sat, 14 Feb 2009 19:11:28 +0700, Bruce in Bangkok
wrote:

Exactly. A great many airosols are using deoderized propane

Nitpick. Never odorized in the first place. BTW, they use some
mercaptan for that. A Texas school was heated with odorless gas,
[including some propane], from a well on the place, and it blew up
with no warning. I used to have a place with a propane furnace in the
basement, but it wasn't a boat with waves flexing all the connections.
Thousand gallon tank. Sometimes you can hear an exploding house for
miles. TNT is 2000 BTU per pound, hydrocarbons run about 18 000.

Casady