I need to know if there are any more effective, more modern ways of knocking a person out with drugs--specifically, a spur-of-the-moment, relatively quick and silent drug knockout such as chloroform. Is chloroform itself still the best way to go, or are there new drugs that work faster/better? If so, what are they? (And any descriptives on these drugs, such as if they have any particular smell, would help me even more.)
Also, if there are any non-drug-related ways of knocking a person out without really hurting them physically--such as, I don't know, pressure points or something like that--I'd be more than happy to hear about those as possible alternatives.