How Old Do You Have To Be To Vape Without Nicotine?

I’m going to take a tooth extraction on Sunday and I wonder how long to wait for vaping after the tooth extraction?

Recently I am fasting but I really can’t give up vaping. Could you tell if I can do so while fasting?

I’ve been vaping for a few years and sometimes I want to make a vape by myself. Si I want to know how much it cost to manufacturing a vape?

I am curious about the vape charging and I want to know how many times can I recharge a vape in maximum.

Recently I need to have a fasting blood test, and I wonder if I could vape during the fasting period.

I often get cough when vaping, could you tell me some ways to avoid vape cough?