Damp in walls usually comes from bellow out of the ground. if there is dampness in the wall this indicates that the damp course is either damaged or even non existent another possibility is that there is back fill against the wall bridging the damp course. the solution is to ake sure the damp course is in place and doing its job. Damp course is a waterproof barrier that sits on the brick work just above ground level and usually just under the ant capping.
If you have an area of dampness, that usually indicates a leak of some sort. Find the source of the leak and that should take care of it.
If its a wooden wall then the mold is (be the description) wet rot. To get rid of that you have to treat all the wood and replace any thats breaking up. Then you have to treat the source of the damp thats causing the wood to break down If its a rendered wall i.e. brick, block or stone that been cemented over then top coat plastered the its again damp forcing the salts out of the materials - You can brush it off and seal it with a stabliser or PVA but you really need to investigate the damps origin and deal with that first
get a dehumidifier or a product called damp rid
If the relative Humidity of a certain material or spot in your house is above 80 percent. You will get fungus and damp.
headbutt the wall
it depends on how old the wire is and how wet it is but it can be possible
All structures would benefit from having damp proof foundation as damp would cause tearing in the foundation structure and weaken it over long time exposure.
An animal make have gotten trapped in a wall if the wall smell like one. Another reason for the smell is mold which occurs when there is water damage.
To get rid of all the dust on your tv screen use a slightly damp cloth and go around the corners and edgesFIRST then work your way into the middle!
try oxi clean it got the cleaned my carpet and made the smell go away!
they can make the wall.
you can call the fire department to get them out
You can get rid of mushrooms under the floor by exposing the mushrooms to sunlight or by using an herbicide to kill them. You can also dig the area out and remove the mushrooms physically to get rid of them. Make sure that the area does not stay damp and they will not grow back.