"Hundreds of residents in southwest China demand to know source of foul smell", 15th April 2015

Hundreds of Chinese gathered in the streets...on Tuesday night, demanding to know what caused a bad smell in the air and asking authorities to shut down polluting factories...The government of Weiyuan County said Tuesday that the foul smell was caused by a leak of liquid coolant at a porcelain factory...residents said they also are worried about the chemical plants in the town...A government statement Tuesday said the smell was dissipating and that no harmful substances such as benzene, ethyl-benzene and xylenes were found...The local police department said it had called in for interrogations seven people who had spread rumors, smashed public property and used violence to thwart law enforcement efforts...