The Hidden Fire Risk Inside Disposable Vapes UL Standards & Engagement UC Davis study: Disposable vapes may be more toxic than cigarettes A toxic, plastic problem: E cigarette waste and the environment Disposable vapes may look harmless but inside are batteries, plastics, and toxic residues. When discarded incorrectly, they add to fire risk, pollution, and the growing e waste challenge. Responsible handling starts with Derby: Dangerous metals found in batch of illegal vapes