Many health officials in the U.S
Vaping is less efficient than smoking when it comes to nicotine absorption around 30% to 50% gets absorbed depending on your inhaling style, device heat, and nicotine type (freebase vs salt)
1 2 (en) Liqiao Li et Yifang Zhu, Vaping and Secondhand Exposure , dans Handbook of Indoor Air Quality, Springer Nature Singapore, ISBN 978-981-16-7679-6, DOI 10.1007/978-981-16-7680-2_7, lire en ligne), p
39 Smoke-free products, in general , are much safer than cigarettes (by one to two orders of magnitude), so it is almost impossible for population detriments to outweigh population benefits if the comparator is cigarettes