A recent study indicates there may be some health risks associated with vaping. lay person summary of study: E-Cigarette Use Exposes Teens to Toxic Chemicals scientific article: Adolescent Exposure to Toxic Volatile Organic Chemicals From E-Cigarettes This study has me wondering about how it applies to different systems. Unlike sub ohm mods designed for cloud chasing, pod mods usually have a more restricted vapor production. So wouldn't there also be a significant difference in the exposure to harmful chemicals? And the pods are typically disposed after use (though some folks do refill them) so is there less build up of toxic products if you are replacing the pods? What heating elements are safest? I'm new to vaping and have lots of questions. Thank you in advance for your help addressing my questions!