New Year's Resolution: Should You Switch to Lower Nicotine Vapes for 2 Are Disposable THC Vape Pens Safe for Your Health? Disposable vapes are more toxic than cigarettes, contain lead: Study Disposable E Cigarettes More Toxic Than Traditional Cigarettes UC Davis While vaping is not risk free, it is less harmful than tobacco Our World in Data Vapes are harmful and can be highly addictive. Some disposable vapes have nearly tripled in nicotine strength in the span of only 5 years.