Rented apartment. Warm water emits toxic vapors.?

Rented apartment. Warm water emits toxic vapors. What is the source? Pipes or the boiler itself? What substances can there be? I thought initially that the bathroom paint got soaked by vapors or that the cleaning products got mixed and the bathtub sewage didn't flush enough. But no, it's coming from the... show more Rented apartment. Warm water emits toxic vapors. What is the source? Pipes or the boiler itself? What substances can there be?
I thought initially that the bathroom paint got soaked by vapors or that the cleaning products got mixed and the bathtub sewage didn't flush enough. But no, it's coming from the pipes, it's the water itself. Damn toxic!! What is this? This is kind of urgent. The experts here are morons, feel free to share your knowledge.
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