South Kent and Sussex residents are being asked to keep doors and windows closed due to a gas cloud that is believed to have come across from Rouen in France.
The warning follows reports of a gas leak from a factory 75 miles west of Paris. Kent Fire and Rescue Service says it is aware of the problem and liaising with its partner agencies to see what can be done.
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A young Scout from Kent has collapsed and died while attending a jamboree in Finland.
Train services through Gatwick Airport face delays and disruption after a track fire closed half of the lines at the station.
Network Rail has reopened two of the four lines but two will remain closed for the rest of the day.