Pong!

A bit of excitement a couple of days ago.  We woke to the smell of gas.  After ascertaining that in was not indoors but that the street outside smelt vilely of rotten eggs we closed all doors and windows and waited indoors for the big bang.  After finding out the gas was not harmless (so said by the cause of all this bother) we found out to our astonishment that the smell emanated from a factory in Rouen, France.  There had been a leak of an additive that is added to natural gas as a safety precaution (natural gas having no smell, so you wouldn't know if there was a leak).  The wind had carried it along the French coast and then northwards across the Channel to Kent and Sussex.  .  Thankfully the snow turned to heavy rain and the gas was washed away.  So I am still here to tell the tale.