My science project in Jr High was a volcano. It contained about 3 pounds of a potassium nitrate, sulfur, sugar concoction. When I lit it the wind first took the smoke into the cafeteria during one of the lunch periods. No air conditioning back then. Then the wind shifted and it gassed all the office employees that came out to watch.
I got an A for gassing the school so well.
My, I got a good laugh out of your post!