Nah, it's definitely not a flushing issue.

It's not something I taste as I vape, it seems like more of a 'residual' effect from the PD itself.

I notice it especially when I wake up and have my morning 'lung oyster' session, hah.

Been over 3 months since I quit smoking, and my poor lungs still have a lot of purging to do. I don't want to add more crap into them with a product that SHOULD be helping me be healthy.