Do you think we're supposed to believe that there was a previous Smoke Monster? Only 2 things justify it:
-How could Mother really destroy that entire village on her own? -How did she know what would happen if you touch the source?
She couldn't have been one, since she was killed like a normal person. Unless that whole stab them before they speak thing is real. Which I hope not because that would debunk my peronal explanation of the Smoke Monster. And I'm not into that.