I'm not ratting on my passengers and what they do or talk about is not my business - as long as not doing something about it wouldn't bring me and my crew in trouble or was grossly unethical for other reasons.
I think this is a very good point, and [often significant] discretion is required to work in this business, however; I think crew being forced by the pax to breath second hand smoke from performance-altering drugs is along way across the line, especially since it seems they were warned/instructed not to.