I too am feeling a slight discomfort in my lungs with symptoms like temporary shorted breath, lasts about 4 to 5 minutes after vaping for about 5 minutes. Slight weezing what feels to me like Im breathing through insulation and again only lasts about 4 to 5 minutes. During those durations my lungs feel warmer as well.
I am very new to vaping so it could just be the new transition from analogs to a PV. I dont want it to come across as complaining either because I am very much enjoying the experience.
This will be my 4th day using my device and it seems the symptoms are dying out as the days pass, I assume this could also be from breaking in a new atty that i could of very well be inhaling the primer which cannot be good. The flavors also have come more alive and taste a little bit different from the first day.
I was vaping 24mg nic liquid now im down to 11mg so much better!