But you and I must see through their smoke screen.

All of these would be used to make a smoke screen.

But many of us see it as a smoke screen.

If the smoke screen moved, she had to be at the front end of it.

They then turned south at high speed under the cover of a smoke screen.

"I wouldn't think of using my wife as a smoke screen."

However, the player can use a smoke screen against the red cars.

"They have been putting up a total smoke screen," he said.

"It is a kind of smoke screen for asking that question."

Someone is using them as some sort of smoke screen.