After hearing a rattling noise from under the car, the mechanic inspected the exhaust system and discovered a cracked catalytic converter and a corroded silencer.

Companies analyze digital exhaust generated by users to target ads and develop products.

Recent studies show that non-exhaust sources, such as brake and tyre wear, contribute significantly to urban particulate pollution.

Before the long trip, she topped off the truck's diesel exhaust fluid to ensure the selective catalytic reduction system worked properly.

After running the marathon, she collapsed onto the bench and sighed exhaustedly.

After three consecutive night shifts, her exhaustedness was obvious to everyone who saw her.