Tobacco use or burning candles can cause this.
It acts like an airplane propeller. Turning one way it will suck up the air beneath it which will then spread over the ceiling and descend by the walls. Turning the other way the air is sucked from above, driven down so that it spreads across the floor and rises against the walls.
It's not easy to do. I'd hang thin poly sheets from the top edges of the walls if I was doing it.
Walls, floor, ceiling, and ceiling
Yes, the tan and white combo would go very well in a small room, the brown carpeting would "pull the room together" but the yellow ceiling could be trouble. If the yellow is a pale yellow and the ceiling very high, it might work. But to be safe, it would be better to use a white ceiling.
Ceiling and walls.
In the ceiling and the walls
Yes, a brown ceiling fan will look great with white walls. Just avoid a white ceiling fan, or this will wash the room out and make it look stark and boring.
Ceiling.
a mushroom
A leaky pipeline creates water above the ceiling. This water will get absorbed by the ceiling materials, making the roof, damp and moldy. The leaks weaken the ceiling walls and can create cracks in the walls and also, the water can spread to the other walls, if the leaks are not fixed in time. The water can also create ugly stains on the walls. Hence, it is important that leaks are fixed fast before they cause huge damage to the house.
ceiling because you wil be less likely to damage the walls as you are puting it up.
These brown dots on your walls and ceiling can usually be attributed to fly feces.