Electronic cigarettes, commonly referred to as e-cigarettes,work by delivering nicotine and/or other chemicals to the user via an aerosol vapour. The earliest approximation of the current e-cigarette is thought to be a United States of America (US) patent application submitted in 1963 by Herbert A. Gilbert and patented in August 1965 for a ‘smokeless non-tobacco cigarette’, with the aim of providing ‘a safe and harmless means for and method of smoking’ by replacing burning tobacco and paper with heated, moist, flavoured air.
George, J., & Thomas, D. (2018). E-cigarettes for harm minimisation: absence of evidence or evidence of absence? International Journal of Pharmacy Practice, 26(5), 377-379. https://doi.org/10.1111/ijpp.12487