Question
A sort of dangerous white fungus has spread on the floor of my house.Please suggest effective remedy.TIA

Answer
Hi Nancy, If you have been told by an expert that it is dangerous, then you should follow their recommendation for removal.  If you think, it may be dangerous, then you need to have an authority come and take a sample for identification and they can recommend a company to solve your problem.  This is not something that can be diagnosed or cured over the Internet.  Seek a local expert at once.  Jim