Always be aware of loose clothing around heat sources like candles and stoves.
With the wrong clothing, one slight misjudgement can result in a fire causing serious burns.
You Snooze, You Lose! If the person you're caring for drinks, make sure that they don't do so while cooking or near other heat sources such as candles or fireplaces.
If they're a smoker, ensure that they don't smoke while they're tired, or in anyplace they frequently doze off such as in bed or in an easy chair.