Is there a chimney behind the main house affecting the health of family members?

In order to better analyze the water, you should provide the mountain water potential plan around the building, the overall plan of the floor where your unit is located, the internal space plan of your unit, and the exact direction (degree) of the building.

From your description, you can only see the following points.

The two-bedroom door has a bathroom and three finished doors, which is not healthy and easy for family to quarrel. It is advisable to put a feng shui copper ruler at the foot of the toilet door and hang a string of true five emperors' ancient money on the lintel outside the two rooms.