no enemy here. i just prefer facts. the info that you refer to is regarding direct contact at far larger concentrations. not residual compounds left behind from extraction processes. the difference is astronomical. you cant compare 4 hours of direct exposure to any of the solvents used for extracting oil to the trace elements left behind. i wouldnt want to be exposed to grain alcohol(ie vodka tent) in vapor form because i know it would kill me just like prolonged exposure to propane, butane, hexane, or vaporized isopropyl/naptha would. we are exposed to every one of those chemicals in some form or another everyday unless you live in a purified environment. if you saw a gcg result on the air we breathe most people would be afraid to go outside. and you can find those pretty easy. youd be hard pressed to find any for residuals in extracted oil. if your extractions help your mother then thats good enough for me, if rick simpsons has helped with his oil thats good enough too. because thats the point isnt it? that it works, you made someones pain or suffering easier? sounds like your mom is lucky to have you to look after her.