Liquid nicotine solutions for use in electronic cigarettes; Liquid nicotine for use in electronic cigarettes; Nicotine salt formulations in the nature of liquid nicotine solutions for use in electronic cigarettes; Flavored nicotine salt formulations in the nature of liquid nicotine solutions for use in electronic cigarettes, not flavored with essential oils; Cartridges sold filled with chemical flavorings in liquid form for electronic cigarettes; Electronic cigarette liquid (e-liquid) compris...