OnTriggerEnter2D using child's Trigger Box

In one of my sprites there is a script that calls OnTriggerEnter2D, but instead of using the trigger box that is in the parent class, it is using the trigger box that is placed in the child object. I have tested this by changing the sizes of the trigger boxes and the method only seems to react to the child's trigger. Is there any way to change the specific trigger that is used for OnTriggerEnter2D?