The one thing that you do when you have leftovers is to just package them up in any type of packaging and place it in your fridge. You don’t even consider the type of packaging you are placing the leftovers in at all. You just do it because of convenience.
It is easier to throw your leftovers in a container of some sort rather than sealing them up with saran wrap or aluminum foil. However, do you really know what your containers that hold your leftovers are composed of? Do you really know how safe they are? You would not even think twice about your containers potentially being hazardous, but there is a good chance that they might be.
