Brock's new and improved smokescreen, or "artificial fog" as he preferred to call it, was ingenious.

The little boats weave in and out, until they have covered the fleet with their artificial fog.

Exhibits at Yverdon are approached through a cloud of artificial fog.

The artificial fog lifted just as he moved through the door.

This artificial fog is most commonly used in professional entertainment applications, but smaller, more affordable fog machines are becoming common for personal use.

The artificial fog dissolved as quickly as it had reappeared.

Emerging from an artificial fog, he could have been on the moors or the damp streets of London.

I read today that Germany has come up with a somewhat bizarre solution which appears to be to cover nuclear power stations with artificial fog!

Pumped from the ceiling, a bank of artificial fog rolled onto the runway.

"Then the tug was above the artificial fog."