No long term studies have been done on anything we do so the question of is anything safe is a little iffy.
It's not like some other designs where the vape never comes in contact with the copper.
How dangerous for us is copper? How much copper does the vape pick up? Is it better to look good than feel good?
Is it safer to hide in your basement? Probably not cause you will get little exercise and starve to death. Is it safer not to use copper? A little extra copper might be good for you under some circumstances.
The old is it safer than tobacco does not work cause you don't have to use copper. Is stainless steel, with it's chromium, safer than copper?
We have no idea.
