im pretty sure they wont find drugs if they dont look but im not 100% sure. but about the detection times, it depends on how much u smoke, how much u exercise, how fast your metabloism is, and how much u eat, so the answer differes from person to person. but if u stop smoking, eat a little less and maybe go for a walk everynow and then u should be clean by may first (if youve got an average metabolism)