Vaping THC risk and advice Change Grow Live Its painful. Its sudden. And sometimes it can take months or even years to be diagnosed., Joshua Ring, M.D., emergency medicine specialist at Duke Regional Hospital said cannabinoid hyperemesis Vapes may leave a sweet taste in your mouth, but they're also filling your lungs with toxic chemicals. These chemicals can permanently scar your lungs and cause breathing difficulties in the Cannabinoid Hyperemesis Syndrome Differences Between CBD vs. THC