Hey guys, Long time lurker, first time poster. Anyhow, I'll keep this short and straight to the point. " However, a recent study has shown that vaporizing marijuana can lead to toxic levels of ammonia in the vapor. Ammonia can cause lung irritation, nervous system effects and asthma attacks. As there are many different types and models of vaporizers available, more research is needed to measure the chemicals produced by vaporizing marijuana and marijuana extracts." https://www.colorado.gov/pacific/sites/default/files/M_RM_Marijuana-and-Methods-of-Use-FAQs.pdf Thoughts? I've had my SSV for months now with no ill effects, but I wanted to see what the community here had to say.