Kiss the coffee stains, the yellow teeth and the un-biodegradable Styrofoam cups goodbye, a Harvard professor has invented a new clean and environmentally friendly way to get that daily jolt of caffeine you crave for every morning . It’s called Le Whiff and users place one end of the stick, which is about the size of a lipstick tube, to their lips, then inhale gently. ‘Whiffers’ intake about 100 milligrams of caffeine (which is equivalent to a small cup of espresso) and less than a single calorie with each Le Whif.