What heavy metal band singssmokescreen?

Answer 1

There's a number of bands with songs by this name, both amongst true Metal bands, non-Metal bands which the media likes to try passing off as Metal, and non-Metal bands which don't try to be Metal bands. From the former category, the song by Pentagram from their First Daze Here Too compilation and the one by Exit Wounds from their Return Fire EP are the ones which would seem the most likely from that list, although there are tracks by that name by Dream Smashers Inc., Embittered, Jaww, Omegalord, Megascavenger, Play War, and Throne.

Other tracks by that name from non-Metal bands have been performed by Flying Blind, Willis, Ted Nugent, Monroe Michael, Citizen King, Laura Branigan, Rico, and several other. The most famous of those would probably be either the one by Ted Nugent, or the one by Flying Blind, which was featured on the soundtrack to the movie, American Pie 2.