Can you help me describe this chemical reaction?

When trichloroisocyanuric acid (C3Cl3N3O3) is combined with certain organic compounds like sucrose, wheat flour, and corn starch in a homogeneous mixture and heated, a chemical reaction occurs. The chemical reaction produces a hissing sound, a pungent smelling white smoke, and a significant amount of heat (hot enough to burn somebody if they touched the reaction crucible). The smoke has the same odor regardless of the organic compound used. When the reaction is over (about 15 seconds later for 2 grams of the mixture), a delicate black to gray crust (resembling ash) remains in the crucible.

I have two theories about what happens in this chemical reaction:

1. The trichloroisocyanuric acid (which is an oxidizer) assists in the combustion of the organic compound.

Or

2. The organic compound serves as a catalyst in the decomposition of the trichloroisocyanuric acid.

What occurs during this chemical reaction and why (prove my theories correct or incorrect)?