What are Cannabis Vapes? Bud and Mary's Toxic metal particles can be present in cannabis vapes even before the first use American Chemical Society Do Weed Vape Pens Smell Like Weed? Essential Facts Spiritleaf Ancaster Cannabis Dispensary Some vapes claiming to be cannabis contain 'synthetic cannabinoid' study UK news The Guardian 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 Committee Blog: Regulations in the Inhalable Cannabis Space A Call for Sensible Flavor Regulation for Cannabis Vapes