Are gas heaters safe to use in the bathroom?

Question

I have a few gas heaters around the house, just in case the heatpumps don't cut it, or if the power ever fails.

I remember reading in the manual of my gas heaters that they should not be used in the bathroom.

Why is that?

What could possibly happen?

Answer 1

gas heaters produce carbon monoxide which is a poisonous gas. if these are used in a confined space with zero ventilation, it is not a good idea. Buy a big fat furry cat

Answer 2

In case of a gas leak, enclosed bathroom will be very dangerous.

Answer 3

possibly the moisture would prevent an electronic ignitor to work, or may extinguish a pilot light.