Re:Mummy question (Score 1)

The drug testing results are not as clear as what they may seem though.

Related plants can leave chemical traces that are close enough to give false positives, especially for a test that isn't designed to distinguish between them. Tobacco is part of the nightshade family, so related Old World plants might give a false positive. Mandrake can also leave similar chemical (iirc alkaloid) traces to those of cocaine.