system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why does a candle produces so much more smoke after it is blown out?

Seems like they are not producing any smoke while burning. (At least not noticeable)
gpt
A candle burns with enough heat that the wax gets completely combusted into CO2 and other gas-only products. Wax-vapour that hasn't combusted is still hot enough to spread out by natural convection.

When we blow out a candle, the temperature drops. Wax still on the candle can no longer combust. The smoke we see is not a gas, but rather tiny droplets of solid / liquid wax, much like water-droplets in a cloud.

Once we blow out a candle, any wax-vapour that remains in the air has no option but to stay there - as smoke.