So it should not be so important, and you know that the cosmetic bag was, even if a new cosmetic bag would be better. So it may be a problem for a cosmetic bag used? There may be increased or shape effects that have been processed can not be viewed. You do not know where the cosmetic bag was and took it. You do not know if she was sitting in a musty basement, was left on the street or in a car trunk.
Perhaps the cosmetic bag was cleaned with a dry cloth. There may be residue left in the cosmetic bag that you can not see or feel that your child breathes in. face so close to the lining of the cosmetic bag, they would get a big gulp chemical residues. There are probably microbes like bacteria, and possibly viruses are still in the cosmetic bag.
This could be your new baby is not exposed. Some bacteria can live for a long time. Additional fact that you can not see does not help. What about ticks? Mites make eco-friendly cosmetic bags. If the cosmetic bag has been used a lot in the house in the summer or at another time, you probably picked up some dust mites somewhere.
Dust mites leave droppings, which can not be considered. And many children are allergic to dust mite feces. They are difficult to remove because they need very hot water to kill them. And the cosmetic bags are washed rarely or never. No matter how clean or cosmetic bag as probably there are some issues that are not visible to the human eye.