The "musty smell" is far from "normal" - it most certainly is not normal, & its foolish to say so especially in the above context. Is it your intention to give the OP further difficulties and expenses?
Do you consider the possibility of Dry Rot to be "perfectly normal"?
A musty smell is an immediate giveaway of damp difficulties to any experienced surveyor or Remedial worker.
Adding a superlative such as "perfectly" to "normal" doesn't reinforce your point.
You say things are "normal" but they "suffer" - sounds like a contradiction to me.
Do you consider suffering to be "perfectly normal"?
Another contradiction starts out as "perfectly normal" & ends up as a "problem".
No its not - thats a ludicrous statement. Complete rubbish to say such a thing - stop attempting to mislead OP's with your ignorant nonsense.
You will cause an accident or get someone to unnecessarily spend large amounts of money with your ignorant claims.
You have no idea of the consequencies that your ignorant bluffing can cause - OP's come on here to be helped with often urgent matters not to be misled by technical ignorance.