Switcher56
Comfortably numb!
I see you are the type of individual that has a glass belly button. Spark another!Vegetable glycerin and propelyn glycol are both used in vaping to this day. Both PG and VG when heated can cause damage to lungs.
Did you know that PG is used @ up to 10% in hospital air filtration system as a anti-bacterial agent? You obviously don't, so go play along Johnny!