I've been vaping a little over 4 years now. Never had issues with vape juice brands or anything of the similar. Out of nowhere about 3 weeks ago, I've had a constant sore throat from vaping. No matter the VG/PG, I've completely stopped sub ohm vaping (going from a Smok T-Storm / Smok TFV16 to a Suorin air. Still no change, constant sore throat. Anyone ever have this issue?