Comparing the regulation and incentivization of e cigarettes across 97 countries ScienceDirect Using E Cigarettes: What Clinicians Must Know Psychopharmacology Institute E cigarettes contain hazardous substances, addictive and harmful Should Nicotine Warnings Be on All E Cigarettes? E cigarettes or vapes are sold with either single use batteries or lithium ion rechargeable batteries. When vapes get crushed in general waste or mixed recycling, the batteries can spark. That spark becomes a fire. The FDA's flavored e cigarette guidance could keep adult smokers from safer alternatives