The Mysterious Vaping Illness That's 'Becoming an Epidemic' The New York Times Vape Flavors and Vape Juice: What You Need to Know Johns Hopkins Medicine Concern is growing about synthetic cannabinoids found in THC vapes stronger, riskier, and unpredictable. These substances sometimes called fake weed have been linked to seizures, paranoia and even Nicotine poisoning and overdose: Symptoms, treatment, and prevention