in a pinch, you can even use good quality food flavoring. Make sure they are pg or vg based. Ingredients should be only.... flavoring (artificial flavoring), PG, VG, alcohol, distilled water. You have to use more and allow juice to steep and let some air in to evaporate the water/ alcohol. This is not the recommended method, but will do in a pinch. So if it came down to this method or buying smokes... this method is preferred. In desperate times (or stealth vaping) you can even use a pg/vg/nicotin flavorless juice. (Can't smell it? Noooooooooo I wasn't vaping .... Fog? No, that was an extra hot turd that hit the cold water.)