A: No odor or smell
A: The inside of this item is cardboard.
A: Lined with fabric
A: Yes, it will fit.
A: They are the sturdiest that I found. If a bankers box is sturdy yes. Purchase one and test. You can return if not sufficient. I purchased 4 and vety satisfied with them. Grand baby uses to hold toys.
A: Yes so long as they are the correct size to fit the file folders your referring to. The bins run true to size and are pretty sturdy.
A: No. The cardboard is too weak for that. I use them to store kitchen bowls, cat food, lentils, etc and they're good for that but something as heavy as files will break the handles and box for sure.