Nah, that will not likely work. It's nearly impossible to change subconscious thoughts/reactions with conscious, rational thought. If you can, then you are amazing.
haha nope
It's only impossible to change subconscious thoughts/reactions with that kid of mentality towards it, otherwise if you're open minded you can pretty much change yourself in almost any way viable, but that would take a forgetton of meditation.
But to remove the negative connotation with this gas is pretty easy, you just evaluate the situation, and realize you had a bad experience from something that for others was a great experience, it's all about perception.
pretty sure he knows what hes talking about and im also pretty sure this is a placebo effect
If it was a placebo effect he would have to take something he thinks is the gas or take something that he's told it would have the same effects on him, the placebo effect doesn't just occur at random. Even though I stopped smoking I wouldn't just be walking down the street one day and then suddenly feel high as forget, you have to be in the position to where you're actually ingesting said substance or told you are when you're really not.