Most people know that cinnamon is used for love and money works but they don't know why. For one, it's in the bible. The second reason is that it heats up the work.
This is called "The Cinnamon Challenge". After watching these videos I'm convinced that cinnamon would also work great for "shut up work".
Note: The Cinnamon Challenge can be dangerous and may prove fatal if the person inhales the powder. Please do not imitate what you may see in the below clips.