'Le pong' gas smell crosses Channel
A chemical plant on the outskirts of Rouen is leaking a foul-smelling gas which has spread over hundreds of square miles - across France and into south-east England.
The strong-smelling chemical in the gas is non-toxic but its odour has been described as "a combination of sweat, garlic and drains".
Residents have complained of searing headaches and sore throats.
Russell Trott reports.