Personal air filtering units for filtering smoke or vapor exhaled directly into the unit

Electronic cigarette atomizers sold empty; Electronic cigarette mouthpieces; Electronic cigarette refill cartridges sold empty; Electronic cigarettes; Electronic cigarettes and oral vaporizers for smokers; Electronic cigarettes for use as an alternative to traditional cigarettes; Cartridges sold filled with chemical flavourings in liquid form for electronic cigarettes; Chemical flavourings in liquid form used to refill electronic cigarette cartridges; Liquid nicotine solutions for use in electronic cigarettes; Smokers' mouthpieces for electronic cigarettes