Candles are safe if they are manufactured to a high standard and used sensibly.
But otherwise they can be dangerous. That is obvious. They involve naked flames and burn wax which includes chemicals.
And there have been a lot of accidents. For example, UK government statistics show 1,059 accidental fires caused by candles in 2012-2013, with 401 injuries.
And – while this happened in the US – it seems rock legend Ozzy Osbourne (OK, not a man known for taking excessive safety precautions) once set fire to his own hair in a domestic candle incident.
So it’s not paranoid to think that there need to be quality and safety standards.