Smocaine is a crack detective who is literally on heroin on the job but is still the best cop on the force. He doesn't play by the rules, but that's his strength.
"He's a damn good cop when he's straight and sober, but somehow the heroin gives him an edge". Quote from Smocaine 3
Smokane is actually slang for Spokane, WA. This term is use by people in coeur d'alene, Id because in Idaho pot isn't legal like Washington. And the drive is about 45 minutes.