A smoke machine (or haze/fog) can be a fascinating addition to any stage production, whether it features dramatic acting or a music concert. However . . .
churchleaders.com
"I was at a Christmas concert this year where there was so much smoke during one number the soloist lost her bearings, started coughing, and almost fell off the stage! . . . How little smoke will it take for the stage lighting to be clearly defined and enhanced?
"Because in most cases, much more than that, and it becomes a distraction and takes the audience's attention away from the presentation rather than helping tell the story."