Well, as it turns out, there’s a reason for this.
Candle wicks should be trimmed regularly
Secondly, you better be strategic about where you place it.
“Keep candles dry and in normal room temperature.”

You should also keep it away from any drafts or open windows.
“Trimming the wick is very important,” said Bonin.
It also prevents black smoke from occurring and ensures the glass isn’t over-heating," she added.
