i have got the slightest cough from vaping long term. I am currently trying a low % of VG to see if I can overcome it. Failing that what should I do? I do vape a lot and I worry what it’s doing to my insides if I have this cough. I’d say it’s about 5-10 times better than when I smoked, but still scary. Is it likely dangerous? Or should I, if failing to identify what’s causing it, continue vaping?