WATCH Fentanyl laced vape pens among teens concern after Tennessee high school incident Fentanyl Rises Again, This Time as Trump's Diplomatic Weapon Against China The New York Times Drug laced vapes pose a serious and growing public health threat. Attractive flavours and packaging can hide dangerous substances such as ketamine, fentanyl, heroin, methamphetamine, THC and synthetic opioids. Even small amounts can MBN: Some vape oil confiscated last week found to contain fentanyl