That is true.
But flavorings is something we don't know enough about, and sweetners, etc.
I say do whatever you need to quit smoking, BUT I also don't believe in over-doing anything, because as we all know, we don't know enough about inhaling food flavorings (made for injestion, not inhalation) and less is more when it comes to (already damaged by smoking) lungs.
Unlike infants, who have not reached developmental mileposts that allow them to use self-discipline, as adults we have discretionary powers. We do not have to have pacifiers in that sense. Just like some of my overweight friends who seem to always be putting bit of food into their mouths (they don't really keep track but when you add it up it comes to more than they think) or slather things with condiments (like ketchup which has a lot of calories), they wonder why they can't lose weight and it because they are not *conscious* of what they are doing. They just do it.
This is a feature of all *habits*.