Vaping weed is popular, but there are many unknowns about its safety : NPR Dank Vapes, TKO and Other THC Vaping Brands Are Linked to Illnesses, C.D.C. Says The New York Times 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 The dirty, dangerous secret of California's legal weed Los Angeles Times Cannabis information