I was a chronic marajuana smoker for aprox. 10 years and quit smoking totally at the end of 2014- beginning of 2015 I had also changed my diet eliminating red meats and most soda, exercising regularly and trying to live a healthy life. However, I have periodically been in the same room as people smoking and I am concerned it may be possible to fail a drug test now from the combination between being in the same room as someone smoking and the excessive amounts of smoke I had taken in a couple of years ago ?