cigarette carcinogen class Carcinogenic components of tobacco and tobacco smoke: A 2022 update A Rough Guide to Carcinogen

Its because the smoke that comes out off the burnt end of the cigarette or cigar, contains more harmful particles such as nicotine, tar, carbon monoxide compared to the direct smoke inhaled by the active smoker

Is there misuse when this happens

I feel that you still have to be 18 to [use] electronic cigarettes, also

Other constituents, such as vinyl chloride, have a well-established association with hepatic angiosarcoma [28], whereas cadmium enhances liver cancer risk through proto-oncogene activation, oxidative stress induction, and stimulation of pro-inflammatory cytokines [29,30,31]

San Angelo Convicted Sex Offender Sentenced to 80 Years in Federal Prison for Sexual Exploitation of Two Minors Carlos Julian Ruiz of San Angelo, Texas, was sentenced to 80 years in prison for the sexual exploitation of two children while being required to register as a sex offender for sexually assaulting a child in 2013