Just warm

Max has been very cautious about hot food, drinks, the bath, radiators etc. since he put his hand under hot water on holiday. We have since managed to reassure him with food, having a bath, washing hands that the water is “just warm” not too hot.
He now repeats the phrase whenever food is served and the bath is run, when passing the radiator...
However, he also says when the fire is lit “just warm”
Oh no! The fire is most certainly hot Max!