To make a smoke bomb there are basically two things you need, potassium nitrate, and sugar.
All you do, is measure 50% potassium nitrate and 50% sugar together (so if wanted to make 500G of smoke bomb powder you mix 250G sugar and 250G potassium nitrate together). When you have measured the two (half of each), mix them up. Now you have your smoke bomb powder! You can light the powder as it is OR you can melt the two together. From testing melted and un-melted I noticed that melting them together produces a longer burning smoke bomb. I reccomend melting the mixture together OUTSIDE, on a camping stove or such like (you shouldn't really melt more than 1KG of smoke bomb powder together as there is more chance that it will ignite when melting). Melt the mixture slowly until it has turned orange, when it is orange take it off the stove and remove the mixture from the pan. If it starts to turn black then take it off straight away.
What the hell is potassium nitrate, and where do I get it?!
Potassium nitrate is a chemical, it is used in gun powder, though, on its own it is stable. Potassium nitrate on it's own it not dangerous.
Potassium nitrate is also known as KNO3, and salt petre.
http://search.ebay.com/potassium-nit...sopZ3QQxpufuZx
There is no way to make a smoke bomb w/ out salt peter yet..