system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How and why did humans start smoking anything?

It just seems so bizarre for someone without prior knowledge to just try inhaling smoke, and to keep trying it until you tried something pleasant. What was even the first substance used in such a way?
gpt
Smoking has been practiced in one form or another since ancient times. Tobacco and various hallucinogenic drugs were smoked all over the Americas as early as 5000 BC in shamanistic rituals and originated in the Peruvian and Ecuadorian Andes. Many ancient civilizations, such as the Babylonians, Indians and Chinese, burnt incense as a part of religious rituals, as did the Israelites and the later Catholic and Orthodox Christian churches.

As far as why someone would decide to be the first, no one knows for sure. Tobacco and marijuana are naturally occurring, so for what we know it's possible that there was a fire that burned some of these crops, causing the effects. It wouldn't take long to discover the source and for that to become a trend among a society.