a mass of dense smoke produced to conceal an area, vessel, or plane from the enemy.
something intended to disguise, conceal, or deceive; camouflage.
a cloud of smoke produced by artificial means to obscure movements or positions
something said or done in order to hide the truth
Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
It's a bogus smoke screen to throw up that only skew the debate in you guys favor.
The trial served as a useful smoke screen but it did not signify any political about-face.
Simply, clearly, with some sort of progressive story line minus a technical smoke screen.