1. They were “literally sick of bad air, chemicalized food, and lunatic advertising.

2. (1) An opening in a wall or shaft through which bad air is expelled to the outside.

3. All the measures that I catalogued earlier will help to reduce vehicle emissions - the principal cause of bad air.

4. That's when the British army surgeon Ronald Ross discovered that it was mosquitos that carried malaria, not bad air or miasmas, as was previously thought.

5. I have to make sure that the door to the storage room Is shut real tight before we open the big door So the bad air doesn't get the flowers