I stop using FW as much as I can and no longer making this recipe as well. Whatever FW flavor I use, cause coughing/mucus in air ways after 3-4 months usage. I have noticed that almost all FW flavors have some kind of natural oil in it which does not dissolve in water and sticks to throat as well as air ways of lungs. It does even stick to glass/bottles of liquids. This could be also due to Corn Syrup that is exist in their flavors but in any way both should not be inhaled is my opinion. Recently I noticed, there is a Butter Pecan by CAP, I didnt try it yet but you may check it out. New flavor by CAP.