Here's a pretty good list of what might give a false positive drug test from someone here who knows her stuff. I don't see clove oil on it. Read through it. And hope your tooth is better. Have you ever tried ambisol? It's an over the counter product that numbs out a sore tooth. https://www.medhelp.org/user_journals/show/108168/Why-You-Might-Have-A-False-Positive-Drug-Test good luck and let us know how you are doing