If there is one label that Antonio Falcone, a doctor turned civic leader, does not want to be known by, it is the anti-pizza mayor. Yet that is how notoriety caught up with the mayor of this small town in the Neapolitan hinterland in late December when, in an effort to lower air pollution, Falcone issued an ordinance banning the use of wood-fired stoves not equipped with filters that reduce toxic air pollutants.