system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How come blowing fire makes the flame stronger but blowing candles makes it die?

I actually wanna know because fires at camps and stuff grow when you blow\* but blowing at a candle puts it out. Imagine it's the same size as a campfire, so you can't just say because it's small.
gpt
To make a fire you need three things; fuel, oxygen, heat or ignition source.

When you blow out a candle you are cooling it off, thus the paraffin vapors don't ignite.

When you blow on a campfire, you're adding extra oxygen.