The US seems to be in the process of legalizing recreational weed, which is often consumed by inhaling plant smoke. Relative to that (or alcohol), I wouldn't wo

The US seems to be in the process of legalizing recreational weed, which is often consumed by inhaling plant smoke. Relative to that (or alcohol), I wouldn't worry too much about vaping nicotine. It doesn't appear to have any significant harmful effects other than being addictive (https://en.wikipedia.org/wiki/Nicotine#Adverse_effects https://en.wikipedia.org/wiki/Nicotine#Adverse_effects). That being said, not chronically inhaling anything other than air is definitely the right way to go if you're taking long term health effects into consideration.