It will not...
Attempting to foil a drug screen will just add misery for you--your employer or whoever is requesting the drug screen will see you not just a dope but also a liar (trying to hide/sabotage your drug test).
So, it is better to come clean. If you have a problem, ask for help and you will get more respect that way. Be good. Be sober. Be drug-free. Be respected. Good luck.