RCW 46.61.540
RCW 46.61.540: "Drugs," what included.
The word "drugs," as used in RCW 46.61.500 through 46.61.535 , shall include but not be limited to those drugs and substances regulated by chapters 69.41 and 69.50 RCW and any chemical inhaled or ingested for its intoxicating or hallucinatory effects.