Crystal's nose twitched as the foul smoke brought her back from unconsciousness.

As if in answer, she dropped out of the foul smoke, her wings pressed tight against her body.

These mountains tower over all, their foul smoke corrupts the air.

Even now it was belching out foul black smoke that stung our eyes.

"But it gives a foul smoke," Fflewddur muttered, though the fire was burning clear and brilliant.

The jitney jumped ahead with a puff of foul smoke from its little diesel engine.

In a moment there was a crackling sound and a cloud of foul blue smoke as something burned out, and the door slid easily open.

Her lungs fought for air in the foul brown smoke.

Soon the area was swimming in a foul smoke.

He blinked, his eyes burning from the foul smoke blowing into them, and tried to make out what was going on.