When I first started vaping I got horrible itchy rashes on my legs and generally bad feeling from PG allergy. You can google it, I'm not the only one. The problem is that they put PG in many different products, so when you introduce the levels you take in from vaping it can quickly accumulate in the body, causing sensitivity and allergy issues for some.
I switched to 100% VG and have never looked back. That's my testimonial
Check out: The safety of vegetable glycerin (VG) when inhaled through an electronic cigarette (e-cigarette). Studies on the effect of the inhalation of vegetable glycerin through a personal vaporizer.
And if you really think it's the flavorings, you can get 100% VG juices from quality vendors who make organic juices, such as Velvet Cloud Vapor, among others.
Hope you find what works for you!
Wait!!!!! Don't give up yet!!! ^^^^^^^^^
This!!!!