Where there's smoke there's fire means that a rumor or warning is often based on some truth. If people keep hearing signs that something is wrong, there is probably a real problem behind it.
The expression comes from the simple observation that smoke usually comes from a real fire. Because smoke is visible from far away, people learned to treat it as a sign that something important was happening.
The expression comes from the simple observation that smoke usually comes from a real fire. Because smoke is visible from far away, people learned to treat it as a sign that something important was happening.
When several employees started leaving suddenly, people began saying where there's smoke there's fire.