Toxic metal particles can be present in cannabis vapes even before the first use American Chemical Society Vaping weed is popular, but there are many unknowns about its safety : NPR What are Cannabis Vapes? Bud and Mary's Do Cannabis Vapes Contain More Chemicals Than Users Expect? Young Adults Mix Cannabis with Nicotine, Tobacco RT 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