Mouldy calc


I have an hp55 that was certainly kept in the wrong place by its previous owner so now it smells very mouldy.
After a bit of work, it is now quite clean and working properly but the smell is unpleasant even after seveal months in a dry environment. Does anyone know how I can get rid of it without damageing anything.
Here I am talking not only about the calc but also the case, charger, manual, slip case, reference guide...

Any idea will be welcome.

Thanks a lot,


PS: Does anyone know of a website that has instruction about how to properly clean and restore books and cardboard boxes?

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