Maybe thats what's going on with my lungs. That would be nice, instead of something worse. Wishful thinking.
A friend has had terrible lung trouble, made worse by vaping. She could not find a combination of PG/VG ratio with sufficient nicotine that didn't cause her a lot of trouble. She needs something in the 12-18 range, but anything over 3-6 just irritates her lungs too much.
I suggested that she try MTN (mouth-to-nose), since the mucous membranes in the mouth, nose, and throat are more efficient than lungs anyway for absorbing nicotine. Take a lung full of clean air, then take a mouthful of vapor. Now begin exhaling slowly out through the nose as you gradually close down the mouth cavity, slowly adding vapor to the stream of exhaled air. Let the vapor pass through the nose slowly. You will be astounded at how much nicotine you get. It worked for her, letting her vape 12 mg/ml..
BTW, if you normally use MTL or DTL, you will want to be cautious about trying this with your normal strength juice. It will extract more nicotine than you might expect. You may get a bit of dizziness or even get a bit nic-sick.