1.   Lumbering delivery trucks on Salah-a-Din Street belched diesel fumes and forced boys with pushcarts to the curb in front of the nondescript Lawrence Hotel.

2.   Voyager data also showed that the volcanoes belch sulfurous fumes.

3.   Automobiles, buses and trucks are taking the brunt of the blame for belching fumes and making French skies filthy.

4.   But the air is at its worst in the heart of the capital, where innumerable cars and tour buses rumble over the cobblestone streets and belch diesel fumes.