Propylene glycol is an active ingredient in children's Bactine. If its in a childs cleaning solution then it really can't be dangerous.
hi shag, just a word of caution, to inhale a substance is completely different. and as far as pg in nebulizers is concerned, we are
vaping on a constant basis. so, we really don't know; nonetheless, i'm fairly confident that i'm doing much less damage to my body with
vaping in comparison to smoking. still, i would not recommend vaping to somebody who has not subjected his body to cigarettes. how safe we are, i guess time will tell