So, in an effort to be more informed, Googling vaping etc I found this. You probably know most of it.
https://m.reddit.com/r/electronic_c...7d/does_vaping_leave_a_residue_on_your_lungs/
https://m.reddit.com/r/electronic_c...7d/does_vaping_leave_a_residue_on_your_lungs/