what's it called when you smoke a cigarette Chemicals in Cigarettes and Tobacco: Burning? Tobacco smoking - Wikipedia

Tipping Paper controls the smoke deliveries through perforation, serves as a design tool for the individual branding of cigarettes and is a carrier for special substances such as flavors

So if you are traveling with (small amounts) of marijuana/THC vape pens you may not encounter any problems but you should be prepared to have to dispose of your marijuana if it is detected by TSA and in a worst-case scenario, be prepared to explain why you have it in your possession to a law-enforcement officer

Cigarettes can harm the tissue of the lungs and can increase the risk for diseases such as emphysema and chronic obstructive pulmonary disease (COPD)

Or remind me of stupid stuff we did growing up