This stuff has come to my attention a lot of late. The Great White case in Rhode Island, the fireworks they shoot off at the local minor-league baseball field after games, the fireworks on the field in New York a few minutes ago.
Anyone here have experience with “indoor” fireworks? Do they come in self-contained, buyer-fired kits? Do you need a fireworker? How do they work?
Only Elvis Costello knows for sure, but he does say they can make smoke get in your eyes.
Seriously, you should google for pyrotechnics and see what comes up. This is firmly in the realm of movie and stage show special effects but I don’t know how eager they are to talk about what they do.