I’m genuinely serious about this. It seems to me that if they made a vape that made no visible smoke and looked like pen, smokers wouldn’t have to go smoke outside anymore.
It doesn’t have to be a pen. Heck, make it a bagpipe. You could also use it as a purse, and while it would be weird to just sit at your desk with your bagpipe in your mouth, I doubt anyone would complain that the bagpipe wasn’t making noise.