TW: substance abuse

I recently posted a fantasy I had in r/bdsmdiy: adminstering strongly diluted nicotine with every blowjob training, so that the sub develops a literal craving for sucking cock. The original (locked) post can be found here: https://www.reddit.com/r/BdsmDIY/s/HGaa9UnAUY

I put the TW tag for advanced play, because a chemical addiction is highly unethical and too risky imo. I have no intent on performing this right now, I just wanted to get it out of my mind.

I'm aware that this is a power fantasy, where the trainer has an immense grasp on the trainee's mind. I've received multiple comments along the lines of "there are other ways to perform this, just do a mindfuck", but since that post is locked now, I'd rather ask here:

How would you train someone to crave the simple act of sucking cock? I'm looking for hypno files, rituals, specific exercises, experience reports, anything.

Also, for those who actually have incorporated substance abuse and chemical addiction into their play: how did this turn out? How do you handle if a partner is withdrawing consent some time down the line?

I also had the thought that you could use a squirting dildo, one of the kind that can shoot a burst of fake cum, to instead deliver a constant dribble of weak nicotine solution to the tip - so the trainee would literally suck the nicotine out of the cock. Not sure if straight water would work, or if something more viscous would be needed, and if so, how to prevent yeast infection when used in vaginal play.

After creating the original post, I got multiple people in my DMs telling me how hot this is to them, some that have performed this practice before, and others who would like to be trained in this way. So I thought there might be some more people here in the appropriate sub who might enjoy this or share some thoughts.

Cheers!