Are Disposable THC Vape Pens Safe for Your Health? 5 Vaping Facts You Need to Know Johns Hopkins Medicine A ban on disposable vapes could have unexpected effects on how some young adults use nicotine. The new study, published in PLOS Global Public Health, explored how regular disposable vape users aged Vapes are harmful and can be highly addictive. Some disposable vapes have nearly tripled in nicotine strength in the span of only 5 years.