Legally, yes, in most situations, but understanding the law is only a part of the issue
Either way, you are still putting your health at risk because e-cigarette dangers are apparent in all e-cigarette products
nicotine replacement therapy NRT, bupropion, and varenicline) appear to have only fairly small effects on sustained cessation in patients with COPD who smoke
Resources Alcohol and drug use disorders in adult attention-deficit/hyperactivity disorder: Prevalence and associations with attention-deficit/hyperactivity disorder symptom severity and emotional dysregulation
N Engl J Med 307:10421046 Karvonen HM, Lehtonen ST, Harju T, Sormunen RT, Lappi-Blanco E, Mkinen JM, Laitakari K, Johnson S, Kaarteenaho RL (2013) Myofibroblast expression in airways and alveoli is affected by smoking and COPD
[27] They recovered (helped by vomiting), but an ingestion apparently of about 10,000 mg was fatal, as was an injection