Not having an ETL or UL listing doesnt mean that a product is unsafe especially if there are thousands of raving reviews of it online but these safety ratings are a good step towards greater peace of mind

Roll-your-own and smokeless tobacco are taxed at 55 cents per ounce on all fractional parts of an ounce.6,7 Clean indoor air ordinances Smoking is prohibited in government workplaces, private workplaces, schools, childcare facilities, retail stores and recreational/cultural facilities.6,7 Smoking restrictions are required in restaurants and casinos/gaming establishments (tribal establishments are exempt).6,7 There are no smoking restrictions for bars.6,7 E-cigarettes are prohibited in schools, on school vehicles and on school property owned or leased or under the control of a school district.9 Licensing laws Retailers and wholesalers are required to obtain a license to sell tobacco products.6 Retailers and wholesalers are required to obtain a license to sell e-cigarette products.9 Youth access laws Effective December 2019, the United States adopted a law raising the federal minimum age of sale of all tobacco products to 21

Although adults have a low opinion of the tobacco and e-cigarette industry, young people are still forming their opinions, giving the industry an opportunity to shape its reputation in the future, the authors write
Report: Doctor finds numerous bruises, possible e-cigarette burns on toddler PENSACOLA, Fla
Energy Consumption Over Time Continuous operation increases electricity usage