The Global E-Cigarette Market Size is Anticipated to Exceed USD 37.7 Billion by 2033, Growing at a CAGR of 5.3% from 2023 to 2033.An electronic cigarette, or e-cigarette, is a tobacco-containing traditional cigarette in electronic form. Vapor pens, also referred to as e-cigarettes, are devices that use a battery to heat an aerosol that contains a particular liquid.