Difficulty breathing? Feeling like Something stuck in chest? What's going on here???

[zoiDman]

i'd rather just vape air.

unflavored and unsweetened? yikes. that's basically like just vaping air.

Have you Tried It? Unflavored has much more Flavor than you would think.

And since the OP is having Problems, I would Always try to Eliminate Potential Sources of Problems.

And with Flavored e-liquids, those would be Flavorings and Sweeteners.