Well, I'm sure it's not 100% safe, but then again, most of the air is not 100% safe to inhale either 
Since it's definitely safer than cigarettes, I choose to believe that it's safe enough for me. Just like I choose to drink tap water, even though it has minute amounts of chlorine in it.
Since it's definitely safer than cigarettes, I choose to believe that it's safe enough for me. Just like I choose to drink tap water, even though it has minute amounts of chlorine in it.
