In message . com,
Weatherlawyer writes
On Jul 1, 7:58 am, Thomas Prufer prufer.pub...@mnet-
online.de.invalid wrote:
On Sat, 30 Jun 2007 21:37:46 +0100, Mike D wrote:
My house is about 100 years old and has various old redundant gas
pipes, imbedded in the walls and under the floors, but the only pipe
which is supposed to be live is teh one going directly from the meter
to my central heating boiler. And that is all at thoe opposite end of
the house from where the slight gas smell has been commented on.

Old gas pipes can give of the smell of gas -- it's a powerful scent, and a
little goes a long way.

I don't know how deadly the stink additive is but none of the
paraffins are noxious. Unvented, they seem to have an effect on
driving ability though, no doubt, copious amounts of the assassin's
drug of choice: hashish, might be involved there though.

All paraffins aka alkanes are heavier than air.
They run from Methane at

One carbon atom

I think you need to rethink your organic chemistry - it's ****ed

--
geoff