Don't know if this was brought to light, but watch this...
It takes time for your lungs and body to rebuild after all the damage that we have done to it from cigarettes alone, thats given the toxins from cigarettes were the only ones that you were taking in but it does take months if not years for your body to get back to normal.
And besides, I have yet to experience this, (but it can not be as nasty as the gunk I wash off my car windows, the windows and mirrors in my room from what was in the cigarette smoke) regardless I am pretty sure I'd rather be intaking 6-7 ingredients rather than 4000+
I am also pretty sure that, that film will accumulate regardless if you smoke,
vape or not, just like dust is a naturally occurring thing, (I did sure notice a lot more in my room when I was smoking a PAD) Ultimately it is up to you and only you to decide what you put into your body.