A joke-writer's dream is currently unfolding in south London, where the smell of rotten eggs has prompted more than two-dozen gas alerts. The odour is also turning noses in Kent and Sussex. London Fire Brigade sent out the teasing tweet above, claiming the sulfurous waft is emanating from France. Channel 4 News backed up the claims with the following:
Further reportage suggests that the Gallic pong is a harmless additive to natural gas called mercaptan.
As the French themselves would say, one egg is un ouef.