USED ON HUMANS. Scopolamine was also .
The purpose, and the method administered, of scopolamine is so, so different than recreational drugs like ket.
That's like taking a heroic dose of rohipnol
Scopolamine was used by people to have their victim lucid but mind controlled, so folks could rob them blind and/or rape them, like a date rape drug on crack.
Ketamine, well, give someone a heroic dose of that and they'll k hole. They won't gladly take you to the ATM and withdraw their life savings before taking you to their home, ransacking it, then removing their clothes for you to do your bidding.
That's like comparing booze to GHB
In all seriousness, you two should sit down and figure out why you feel so strongly about him not doing it, and why he wants to do it.
If he has a drug problem, that's one thing, but if he is able to control it and be safe, would that take your fear out of it? Or, is it something else? Do you have a close friend or family member that suffered from drug abuse and you're afraid Yanker might be going down that path? If he hasn't demonstrated a lack of control or safe-ness in his decisions, could you help him either try it to satisfy his curiosity and allow him to be in a safe environment? Or does it just not work for you for him to try it?
All things to consider, communicate to him why it's important to you, listen to why it's important for him, and see if agreement is possible.
Often times we let past experiences muddle our view of the person we are with, which feels legitimate (they are your feelings, they are legit) but its also downplaying the capability of your partner. Maybe he isn't the person your projecting on to him, but your fear is strong enough to make it seem dangerous or scary
My gf had an ex who was an addict, so when id smoke cigs she would freak out. Now, when I do drugs I'm very calculated, when I smoke cigs, I know when it's getting too much and I stop. I have the ability to do that, to be smart and in control: her ex didn't have that ability. She also doesn't like the smell, so we came to a decision, as long as I didn't smoke around her and she trusted me to stop if it got to "addicting" again, we were good. Well, it worked out very well but cravings came back so Oct 1 I'm back to not smoking even casually. It turned out she just doesn't want me to be smoking when we have kids, and I dont either. Once we figured out why she was scared and what she (and I) REALLY wanted we came up with a balanced solution. Sometimes at concerts she will even be fine with me smoking in front of her (and me being smart knows that as long as I wasn't chain smoking or making it a point to go overboard, she wouldn't care)
All the huge fights that were going on prior to that discussion and agreement have since ceased, we're respectful of each others desires and concerns.