God Dam it I was just in full waffel mode and the door went.
Where were we yes smokes basically two tubes sealed at each end held togther by pretty wrapper. no not Lil Kim
Smaller end is basically a cap and on the top acts the same as the side of a match box.
The main body hols the smoke and the explosive (these things get seriously hot once they get going) also the striker which sticks out of the top.
basically tear into stike striker check wind direction lob in desired direction and use cover.
To aswser your question no once you strike them you are commited till the bitter end, like I said even in deep puddles they keep putting out smoke and just chug round like a little steamer.
Boring old cow bit it is illegal to sell pyrotecnics to any one under the age of 18 non should you be using them they fall under explosives laws
Ps never put the two opened but unlit pieces in the same pocket they can melt through battle packs like I said they get real hot
keep safe have fun
ps try a thunder flash go on you know you want to.
Pps never talk to strange girls with penny sweets