Flight operations at NSCBI airport in Kolkata were disrupted for a brief period on Wednesday morning as visibility turned low due to dense fog, officials said. West Bengal Governor C.V. Ananda Bose’s visit to Farakka in Murshidabad district in a BSF helicopter was also cancelled due to poor visibility, Director of Netaji Subhas Chandra Bose International airport, Pravat Ranjan Beuria, …