There are populations of people that have been exposed to fog machines daily for that duration of time as part of their jobs. This isn’t a complete unknown. Al

There are populations of people that have been exposed to fog machines daily for that duration of time as part of their jobs. This isn’t a complete unknown. Also vaping isn’t even new at this point. We’re at probably 20 years now of the first vape pens hitting the US mainstream (the ones they made look like cigarettes).