By chance, I happened to open this video just yesterday, didn't know it was about voice
So, after your post, I searched a previous video of his, and I found this one (there may be others)
I know these things aren't well-received by this community, because (a) some new vapers have attributed vaping to everything from baldness to ingrown toenails (b) we all know these posts are read by some who might use information against us.
But, to me, not to point out a legitimate concern is akin to the silence of those who were abused by Jerry Sandusky (gotta keep your mouth shut, don't tell, too much at stake here). No...where money and agendas are at stake, people want a don't ask, don't tell type of attitude.
The reason this interests me in particular is because my own voice started getting raspy at times for the last several months, not so much all the time, but if I talk very much at one time. It's pretty much every day. Not horrible, but noticeable. I smoked for over 45 years, 2 PAD in the last decades, and I never had a raspy voice. I've been vaping now for 3 years. This bothers me a bit.
I've never been much of a water drinker, but I'm trying to drink about 3 liters a day now. I'm glad I'm hydrated, but it isn't helping the voice any. BUT, when thinking about the action of vaping, even if the body is hydrated, I wonder if somehow the vapor constantly going in and out over the larynx has anything to do with it such as a drying effect. I mean, drinking water and inhaling it aren't the same thing.
I've sort of been trying to look the other way about this, because vaping is the best harm reduction strategy I've ever found, for me. Cigarettes were killing me. I'll still vape (at least until I decide I really can't any more), but I may try to manipulate things, like breathing moist air or adjusting VG/PG ratios or something before I throw in the towel.
PS. The voice thing is the only concern I have. I never had rashes or anything like that, but you might be allergic to VG or PG?
I wish you well and hope you find something to help you.
Disclaimer: I'm as pro-vaping as the best of you. I support vaping with all my heart and soul, as I feel it has saved my life (not to mention my pocketbook). I DON'T think vaping causes cancer or rampant devastation. I'm also pro-vegetables, pro-fruit, pro-fish, etc., but some people, for whatever reasons, cannot tolerate some things. That's life. We all have to do what is best for us, individually.
What's the usual pg/vg ratio you vape?
Just to be clear, I never intended to dismiss anything from the OP.