Musty books should generally be treated for mold rather than immediately thrown away, unless they are severely damaged, actively rotting, or not rare/valuable. While mild odor can be treated with airflow, sun, or odor absorbers, active mold (fuzzy growth) can spread to other books, making it necessary to isolate or discard them.
You want to get these away from any other books you value because mold and mildew spread by spores. This kind of damage takes some work, either by you or a conservator, so you will want to decide how valuable the book is. If it is not, your best bet is to discard it--mold and mildew can be harmful to your health.
Place a sheet of the lightweight, 100% cotton interleaving tissue between the front board and the endpaper, then at every 20-50 pages depending on the size and condition of the volume, and finally between the back board and endpaper. Close the book and set it aside until the odor is reduced.
Mold can pose a serious threat to cultural heritage collections as well as to human health. An active outbreak can spread quickly, causing irreversible damage to collections materials. Both active and inactive mold can pose a health risk to those working with contaminated materials.
Additionally, keep in mind that any book that has gotten wet or moldy should be thrown away or burned as they have no value in the recycling market. Likewise, particularly aged books with brown or tan pages should be tossed too as they can't be recycled.
How To Get An Old Musky Smell Out Of Vintage Books
Can mouldy books be saved?
For a paperback book you can use a soft cloth lightly dampened with denatured alcohol to kill the mildew. Use light, gentle strokes as not to damage the paper/glossy cover, and make sure that you dab away the excess liquid and dry the book thoroughly but gently.
Mold can form in 48 hours if a book is wet or moist. Active mold is fuzzy, damp, slimy, and smears. Inactive mold is dry and powdery. Mold can begin to form if a water or liquid is spilled onto a book and the book remains wet, or the book is stored in conditions that promote mold growth.
If you can perceive growth on your book's cover, you may use a fine brush or very soft cloth to gently brush away the mildew. Alternatively, a HEPA filter vacuum hose attachment with a thin cloth or dryer sheet over the nozzle can be an effective resource to remove mold growth from the book cover.
How to get musty smell out of old books on Reddit?
Another thing you can do is to sprinkle a half inch of cat litter (unused, of course) in the bottom of a container that has a lid, then seal the book inside for 12-24 hours. It will come out smelling like a book again. For future reference, place a new dryer sheet inside the book before you store it.
The Five Finger Rule is a simple method to check if a book is at the right reading level, helping kids find "just right" books by counting unknown words on a random page: open the book, read a page, and hold up a finger for each word you don't know; 0-1 fingers means too easy, 2-3 fingers is good, while 4-5 fingers suggests the book is too difficult for independent reading.
If you cannot treat the mould-affected material in a timely manner, consider freezing the items. Isolate the affected material. Place it in a plastic bag, seal and move it to a separate area that is clean, cool and dry, with good air circulation. Isolating the material will prevent the mould spreading to nearby items.
The "old lady smell," or "old people smell," is scientifically known as nonenal odor, caused by a chemical compound called 2-nonenal, which forms as the skin ages, creating a distinct greasy, grassy, or musty scent due to the breakdown of fatty acids and declining antioxidants, not poor hygiene.
However, they don't usually hide on the pages (though they're small and flat, so it's possible). Their main hiding place is between the spine and the pages of a hardback book. There's usually a gap in between the spine and where the pages are glued down, and it makes the perfect cozy home for a bed bug.
A remainder mark appears as a small black or red marker dot or streak on the outside edge of a book. Others appear as a publishers stamp on the outside edge of the book. Publishers use these markings to mark books as unsold (remainder) or returned from vendors.
If your book has active mold which appears to be fluffy and soft, place it in a freezer to halt further mold growth. Once the mold has been halted you may be able to clean it but the book will always be preconditioned to reactivate growth. Seriously consider finding a replacement copy or simply discard.
If you are a reader who likes to protect your books and hates seeing the cover get bent or the pages get scuffed up, a book sleeve is for you. They offer protection for your book whether you're travelling across the world or walking into town for a cafe reading date.
Librarians and archivists who work with old books and papers are exposed to a wide variety of molds and other microorganisms, some of which are known causes of disease. Some of those diseases are chronic, some fatal.
The same baking soda that absorbs bad odors in the fridge can absorb the bad odors in your books. Place a cup of baking soda or an opened box in a plastic box or bin with a lid. Put the book in the box with the baking soda and close the lid. Leave it for 48-72 hours, then check on the book.
Chemical treatment is no longer viewed as an effective way to control mold. Instead, mold is treated by lowering humidity and increasing air circulation. If a large number of books are wet or damp, freezing is a way of quickly stabilizing the infestation until appropriate treatment can be dispensed.
Thrifted books can harbor pests such as booklice, silverfish, and beetle larvae. Freezing books prevents mold development and stops enzyme activity, preventing further spread. Freezing the books for at least 48 hours in a sealed plastic bag is a chemical-free, effective way to kill insects at all life stages.
