The euphemism "blowing smoke" often is used to describe someone who has no power, but repeatedly makes empty threats. In the realm of the spirit, every threat made by an enemy of God is an empty threat. It is empty because Satan has no power to manifest it. He relies on the children of God, especially those who have the indwelling Holy Spirit and/or have been raptured into God's kingdom.
Without the children of God, Satan is powerless. Without their willing participation, he is without recourse. He has only one source of power. Does he have your power? Does he have control of your thoughts and actions? Does he have you slated for a different eternity? You should know that he has everyone slated for a different eternity, and until your soul is rendered immortal by Almighty God, your task is to escape his grasp, to inherit God's eternity, to achieve immortality, to see the new heaven and the new earth.