21.   In Canton, in southern China, and Beijing in the winter, car exhaust fumes have become the leading cause of air pollution, the newspaper said.

22.   St. Petersburg authorities have begun a flurry of cleanup activities, including imposing tougher controls on car exhaust fumes, the ITAR-Tass news agency reported.

23.   Survivors on Wednesday criticized the initial response to their complaints of a smell, saying the gas company told them it was just car exhaust fumes.

24.   The school has protested that the station will trap car fumes and spread even more pollution into its compound and affect students.

25.   However, a spokesman for the New South Wales Health Department said soil particles were relatively benign when compared to other irritants such as car exhaust fumes.

26.   Meanwhile, Muscovites who breathe in car exhaust fumes on a daily basis pay a heavy price.