Propylene Glycol - the base of many e-juices - is sometimes vaporized in hospitals to prevent airborne infections. http://www.jpeds.com/article/S0022-3476%2842

Propylene Glycol - the base of many e-juices - is sometimes vaporized in hospitals to prevent airborne infections. http://www.jpeds.com/article/S0022-3476%2842%2980046-3/abstract http://www.jpeds.com/article/S0022-3476%2842%2980046-3/abstr...