It is unlikely to work and very likely to do permanent damage to your body.
Imagine trying to swallow a ball of fire. Now imagine that every cell of your body is trying to heave that fire back up. You will suffer, every second becoming an eternity, while you try to push down the worst chemical burn you can imagine as your body tries to force that same ball of fire back up and out.
It will not kill you because you will not get it far enough to damage anything other than your esophagus and perhaps upper stomach. Your mouth, throat and esophageal pain will, however, make you wish you were dead. But you won't be.
Please don't try this.