My son did a really stupid thing! First, he is not a habitual marijuana smoker. But he did smoke about 5 days ago. Now he s up for a great job and waiting to hear when they want him to come in for a drug test. Rather than fail, he s talking about not showing up. Is there any way to clean his system in a couple of days? Again, he is not a habitual user and has not smoked at all, until last week, for well over 6 months, maybe closer to a year.