My thought would be to stop smoking.
Stop and even quit smoking and to stay quit
There is no fast way to get nicotine out of your system. It usually takes up to 30 days to clear your system. With technology today there is no way to fool the test. Sorry.
Nicotine has to get metabolized through your system just like anything else. There is a certain amount of time it takes. Nothing can speed this up.
Stick your penis in 3/4 cups of gasoline, then light it on fire for about 30 seconds. Then repeat
Wash your mouth out with beer and try rubbing hydrocortizone on your skin