'Vapor' in the Bible

‘And I will bring about wonders in the sky aboveAnd signs (attesting miracles) on the earth below,Blood and fire and smoking vapor.

Yet you do not know [the least thing] about what may happen in your life tomorrow. [What is secure in your life?] You are merely a vapor [like a puff of smoke or a wisp of steam from a cooking pot] that is visible for a little while and then vanishes [into thin air].