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No, the water in the hot water pipe at 100° can't be scalded, does your ceiling have 100°?
Is there something on it?
Secondly, if not, did it appear after taking a bath? Are there any causes of thermal expansion and contraction? >>>More
An integrated ceiling is a combination of metal square panels and electrical appliances. Heating module, lighting module, ventilation module. It has simple installation, flexible layout and convenient maintenance, and has become the mainstream of bathroom and kitchen ceilings. >>>More
For safety and air reasons, it is still necessary to install exhaust. Perforations can be made in the upper compartment of the window and the exhaust fan can be fixed to the frame.
It is possible that the heating pipe is broken, ask an electrician to check what the cause is, and if it is broken, only replace it.
It's really hard to say, if it volatilizes and is inhaled, there may be a toxic reaction.