Blowing out candles or blowing on something is read as release and intention — a wish made, a breath that cools; wind that blows things about stands for forces you do not control. Dream books link breath to the life you put into things.
When this appeared in your dream, what were you feeling?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.