500 aqi equivalent to cigarettes Michigan currently has some of the worst air quality in the world as Canadian wildfire smoke spikes the past 500. Breathing this hazardous air all day is smoking a AQI of 313- Every 2
Description
Nicotine poses particular risks to developing brains, and research consistently showed that most adult smokers started before age 21

#3 @J33p2022 See attached for the info you need

ABT-089, a neuronal nicotinic receptor partial agonist, for the treatment of attention-deficit hyperactivity disorder in adults: results of a pilot study

doi: 10.4317/jced.52654
The highest Zyn mg levels in the world cater to those with a nicotine tolerance so refined it could probably bench-press your average strength pouch

For some people who smoke, vaping doesnt seem to work well as a replacement