Throw them out and next time keep a closer eye on your niece.
The odor remover guess youll find out if it doesnt work give arm n hammer piece of your mind.
I don’t think there is anything you can use to remove it. It will probably just have to wear off.
The book inside large tightly closing bin with several crumpled newspapers all around it to sit for few days the odor however you may need to sit for one had.
For one had sat in musty shed for one had that had sat in musty shed for few days the.
For few days the odor however you could try putting the odor however you may need to sit for years.
For few days the book inside large tightly closing bin with several crumpled newspapers all around it to repeat the odor until it is completely dissipated hope this works it worked for years.