To be in a state of emotional or mental turmoil
Fire can flame without warning or smolder to an ember if neglected.
Angelina Jolie: She actually does a lot more than smolder.
Do not fling cigarette butts over the side, either, because they can be blown onto a balcony or another deck where they may smolder.
Fire can spread fast, but it can also smolder slowly and silently with insidious fumes killing many people in their sleep.
Never leave your fire to smolder for long periods.