Combination of Coke and Propane can make a powerful mini rocket
Though the trick is fun and simple but it is also dangerous and risky. By spraying the top of the Coke bottle with Propane and turning the bottle upside down, it creates a chemical reaction that makes the bottle fly unpredictably through the air. Also, the power behind the explosion is strong enough that it can break a glass window without giving you the slightest idea where the bottle would land.
If you plan to attempt this experiment in your home it is recommended that you use a wide space outside or a open ground so that no harm is caused.