If you are telling the truth, more then likely you were slipped some.
I recently tested positive for cocaine never used the drug in my life. I have been around people who use and was in a sexual relationship with someone who i know used frequently since tested positive I cut off everybody i knew that is using?
Before being turned into the powder form it is often seen as today, it was still a plant that local farmers used to fold the leaves and put between lip and gums to give a little boost of energy and for medicinal purposes . . . Now tell me . . . Is that wrong?
Now it can be slipped into just about anything to get into your blood stream . . .