My husband had the same problem. In the end it was a combo of how he inhales and too high nic. He would try to inhale all of it straight to his lungs . He went from 24 mg to 6 and now inhales into mouth and partially inhales to lungs.
It could also be pg. some people are sensitive to it. If so decrease the pg content. Only way to be sure is try some 0 nic in the same juices he has trouble with. If the 0 nic is ok then it's the nic level.
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It could also be pg. some people are sensitive to it. If so decrease the pg content. Only way to be sure is try some 0 nic in the same juices he has trouble with. If the 0 nic is ok then it's the nic level.
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