system
Given the following post, respond as if you're commenting on Reddit:
human
Eli5: Why do cigarettes have to contain all the nasty carcinogens, toxic chemicals, and poisons that they do? Why can't people just smoke tobacco like they would marijuana?
gpt
You can smoke tobacco like marijuana. Marijuana smoke is also chock full of nasty carcinogens and shit. That's what happens when you burn things. Wood smoke is just as bad, but hopefully you're not taking straight puffs of *that* on the daily.