Mosquitoes are the last thing you'd associate with the Paris of the West. But it turns out that health authorities there are fumigating vulnerable areas of the city for the first time to kill disease-carrying tiger mosquitoes who have started plaguing parts of northern Europe. Municipal fumigation, whose white smoke is something we in the tropics are familiar with, has led to roads being closed and people told to stay indoors when 'spraying is on'. This is after two people so far have fallen sick with dengue after returning from a foreign trip.