You know that sugar can be explosive, right? And chocolate has sugar in it.

https://en.wikipedia.org/wiki/2008_Georgia_sugar_refinery_explosion

>On 7 February 2008, fourteen people were killed and forty injured during a dust explosion at an Imperial Sugar owned refinery in Port Wentworth, Georgia, United States. Dust explosions had been an issue of concern among U.S. authorities since three fatal accidents in 2003, with efforts made to improve safety and reduce the risk of reoccurrence.

https://en.wikipedia.org/wiki/Dust_explosion

>A dust explosion is the rapid combustion of fine particles suspended in the air within an enclosed location. Dust explosions can occur where any dispersed powdered combustible material is present in high-enough concentrations in the atmosphere or other oxidizing gaseous medium, such as pure oxygen. In cases when fuel plays the role of a combustible material, the explosion is known as a fuel-air explosion.

>?Dust explosions are a frequent hazard in coal mines, grain elevators, and other industrial environments. They are also commonly used by special effects artists, filmmakers, and pyrotechnicians, given their spectacular appearance and ability to be safely contained under certain carefully controlled conditions.