If there is no mold how do you know when an orange bad?

- Smell: If the orange smells musty or sour, it's likely gone bad.

- Texture: A bad orange will feel soft and mushy, rather than firm and plump.

- Color: A healthy orange should be bright orange in color. If the orange is starting to turn brown or green, it's likely past its prime.

- Taste: If the orange tastes bitter or sour, it's probably bad.