I haven't heard anything about this before...BUT... i've had sinus infections, a couple times last year or so, and noticed that the most recent one cleared up seemingly on it's own within a day or two of receiving my volt starter kit, and beginning vaping.
In the past i've had to see a doc for corticosteroid nasal spray(which works, and I still have on hand if needed), but I did suspect that the vaping + exhaling through nostrils may have had something to do with my sinuses clearing up. I didn't use the med spray at all that time.
Now i'm even more convinced.