Thank you very much for the answer, yes, you are probably right. I am currently mixing a 6mg with my own vg and pg, using the only n-base I have which I will dilute. After this, I will make a post to learn what nicotine strength the experienced vapers on this site started with, along with how many cigarettes they consumed per day, and adjust myself accordingly, maybe it is just the nicotine strength that is too much for me, I think diluting it is worth a try.there's no real reason for them to change their setup since they said 0nic juice doesn't cause the issue....
and as they have tested both vg and pg separately without an issue, it's not their device/setup....I'm leaning more towards the nic is either mislabeled or old/bad
and given where they are located, beggars can't be choosers when it comes to nic
they can't really just go to a store or order online....and the quality of nic that they can get their hands on, is probably not really the best....since they already stated that it is a orangish color/tint....
really should try to get a new bottle of nic if you can and see how that works for you.
but also should speak to a doctor and not mention anything about vaping, because again it could be entirely something not vape related.
As of bad nicotine, I will try to order some different brand nicotine as I just found out that it is not the flavouring as well, since the capella sweet strawberry 100% does not contain any DAAP or irritants. I will keep you updated on whatever discoveries I can make.
Thank you, happy, shortness of breath-free vaping!