Oh, right! And, of course, if you can blow the candles out in a oner...All the smoke... that means you get all your wishes come true.
一次性吹光蜡烛就意味着愿望成真。
英语百科
Smoke bomb
（重定向自Smoke candle）
A smoke bomb is a firework designed to produce smoke upon ignition. Smoke bombs are useful to airsoft games, paintball games, self-defense and pranks. They are also used in smoke tests.