RocklandAbs 28" Expandable Spinner Luggage, Abs 28" Expandable Spinner Luggage

I recently purchased a set of this luggage, and right out of the package, the smell is horrendous. Has anyone had luck getting rid of the smell? Tips?

When storing do the (empty) luggage fit inside one another?

Are the larger cases expandable?

What size fits into the overhead spot on a plane?