E Cigarettes Vaping with Juul & Other Electronic Cigarettes 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 Increased oxidative stress responses in murine macrophages exposed at the air liquid interface to third and fourth generation electronic nicotine delivery system (ENDS) aerosols ScienceDirect Vaping: Understanding the Risks and Impacts on Health