I toked for 40 years and my lungs were a mess- morning cough, "lung oysters", the whole 9 yards! it took only 2 weeks of vaping for them to get clear. Your friends are wrong about vaping being as bad for your lungs as smoking. Here are some studies for you to share with them.

Vaporization as a smokeless cannabis delivery system
Clinical Studies and Case Reports

Smokeless Cannabis Delivery Device Efficient And Less Toxic
Smokeless Cannabis Delivery Device Efficient And Less Toxic

Volcano is to Vaporizer As Porsche is to Automobile
CCRMG

Recommendation to Patients: "Donā??t smoke, Vaporize"
CCRMG

Decreased respiratory symptoms in cannabis users who vaporize.
Decreased respiratory symptoms in cannabis users who vaporize.

Use of vaporizers reduces toxins from cannabis smoke
IACM-Bulletin

Educate them! - Granny:hippy: