I rode shotgun with this particular dude that vaped way a lot of- I had nose bleeds from the second hand smoke- I tend not to sit close to him any more & the nosebleeds stopped immeadiatly- note I'm not a smoker & never ever will probably be – http://happycbdstore64.blogacep.com/1045859/5-easy-facts-about-how-vaping-got-me-to-focus-my-personal-vape-story-described