I have same problem with the cops.
before they stop me on highway,they have try to admit me a smellong a pot, after they search in my car and thank god he did not find a bag of pot.
It was stash behind dash board nearly top.
I wrap with rubber cover and black tape wrap void from smelling pot.
If had say no you cannot search in my car.
I know what is like the cop can call k 9 drug dog.
I was cool I can.
That was my experence with a bad cops remember be cool with cops.
Cops will let you go.