At first i thought that VG was the culprit behind shortness of breath for me. But after i while i have realized that even if high VG contributes a lot its more about menthol/koolada that i used a lot that was the problem. I also experienced it when vaping cinnamon flavour.
I can't say i know exactly if its menthol or koolada that does it to me because i only have a very strong mixture with both. I still use it but in much lower quantity.
This is not scientific, i am just sharing my experience and the point of this thread is to see if other people was able to resolve their breathing issues by looking at their juices. It may also help someone else that suffers to look at their flavourings. You also should try lowering the VG. It is also a good idea to visit a doctor if the problems persist.
I can't say i know exactly if its menthol or koolada that does it to me because i only have a very strong mixture with both. I still use it but in much lower quantity.
This is not scientific, i am just sharing my experience and the point of this thread is to see if other people was able to resolve their breathing issues by looking at their juices. It may also help someone else that suffers to look at their flavourings. You also should try lowering the VG. It is also a good idea to visit a doctor if the problems persist.