You're probably not noticing any odors from your local municipal fireworks because they launch them quite a bit higher into the air than your typical neighbor i

You're probably not noticing any odors from your local municipal fireworks because they launch them quite a bit higher into the air than your typical neighbor is going to be sending their firecrackers and bottle rockets, making it someone else's problem. The reason industrial smoke stacks are as tall as they are is to get the smoke away from the immediate vicinity/surface.