To link the drug's production to chemical weapons, prosecutors referred to the toxic and combustible nature of the chemicals involved in methamphetamine production. They said police officers and firefighters who respond to calls involving the drug risk serious injury.
The same can be said of gasoline, propane, hairspray, or rubbing alcohol. Nevermine starting fluid, which is spray ether. Shall possession of .0001 grams of propane be declared a terrorist act, possession of a chemical weapon? You can't be too careful these days. Better safe than sorry.
Oops! Scratch that, you might drown someone!