Hey Hope everyone's day is going well! Thought I'd ask for some feedback about lung issues. Anyway I have noticed a whistling sound in my airway when I take a deep breath and exhale, as well as a heaviness in my lungs which just started. It is a slight whistling sound but still concerning. I have vaped for 4 years and had not run into this problem until now. I don't know if it will go away?? First Off, I have never smoked and am 18. I knew it would hurt my health and lungs, so from family stress of an abusive parent I used high nicotine levels and E-Cigs instead. I have mild PTSD from an account with a gun aimed at me and my life end right before my damned eyes so that;s where this vaping emerged. I also have never heard of this Diacetyl problem until now, and "popcorn lung" concerns me since I am wheezing and all. Great question I have: Can the amount of diacetyl in vape juice cause pop corn lung in a period of 4 years and will my wheezing go away? Any feedback would be appreciated!