Even with minimal inhalation, some material will reach the lungs...

Certainly smoking is very very difficult to quit, nicotine is massively addictive and the withdrawal cravings are absolutely no joke.

How many health issues are just caused by the carcinogenic compounds from standard cigs passing into the blood? That is possible even if you only take it into your mouth as there are many tiny and accessible surface blood vessels there.

Thanks for your questions. I don't have any answers for you on most of them. Also thanks for taking the time to give the post a read.