Tried. Don't expect my results to be generalizable.
Once again, I have no reason to believe that same would happen to anyone.
In any case: Not many good medicines induce vomit. Most people who try it, use water, specially warm water, with mustard. This has all sorts of complications because mustard has a taste and a smell etc... nevertheless, no one in the pharmacy or wikipedia or friends who read pharmapapers had any other indication that would beat mustard water.
I wanted to stop liking chocolate. I waited for a while, so the organism would be sure it was not from lunch, and at dinner time I eat a lot of chocolate, and drank some mustard water. I kept looking at, smelling and thinking about chocolate, and would taste chocolate instantaneously after quickly swallowing the mustard water with my nose held.
It was obvious something bad was going on inside me, less than 10 seconds after the mustard. But my body is not a natural regurgitator. Long story short, I failed to even regurgitate. And now I can say that the weirdest meal I have ever had was composed of 120 grams of white chocolate, 100 grams of lindt milk chocolate, 100 grams of yellow mustard, 1,5 liter of water, and 50 grams of extra strong seedy mustard.
After that I started thinking about fighting for Monsieur Mangetout Guinness title for eating metals and glasses...
Does this mean you still like chocolate?
Thus spake Eliezer:
It seems that many here might have outlandish ideas for ways of improving our lives. For instance, a recent post advocated installing really bright lights as a way to boost alertness and productivity. We should not adopt such hacks into our dogma until we're pretty sure they work; however, one way of knowing whether a crazy idea works is to try implementing it, and you may have more ideas than you're planning to implement.
So: please post all such lifehack ideas! Even if you haven't tried them, even if they seem unlikely to work. Post them separately, unless some other way would be more appropriate. If you've tried some idea and it hasn't worked, it would be useful to post that too.