exhaust fumes

Exhaust fumes made him drowsy and brought on a headache.

废气把他熏得昏昏沉沉，还引起了头疼。

Exhaust fumes from cars are poisoning the air of our cities.

汽车排出的废气使我们城中的空气遭受污染。

There are many sources of air pollution; exhaust fumes, for example.

空气污染有许多来源, 如废气。