However, while vaping has been “safer” than smoking in general, there is some evidence to suggest that vaping could have some other unforeseen consequences as well. This according to recently published research which was titled, “Metals in Cannabis Vaporizer Aerosols: Sources, Possible Mechanisms, and Exposure Profiles”. Essentially, researchers were looking to see if the actual devices could be releasing harmful metals into the smoke and what potential health issues this could have on end-users. Basically, with the devices heating up the elements, they could be releasing heavy metals which is then shot directly into the lungs.