If they pull me over for speeding or something and ask if I consent to having my car searched, I'd say, "holy SHIT no, NO, omg no no no no no fuck me no no no no". And then if they fall into my trap I'll tell them it's just pepcid AC and we'll have a big laugh.
probably no legal trouble from that but theyll still find a way to ruin your day. No fun allowed when cops are involved.