Child Gameobject Collider is affecting parent Rigidbody

Hi,

I'm currently implementing a Quake Spell in my 2D game, so I created a Gameobject that contains a Collider to push all enemies around my hero and my hero is instantiating this Gameobject as a Child when pressing a key.

My hero has a Dynamic Rigidbody 2D, several colliders as triggers and one collider not set as trigger.
Quake Spell Gameobject has just a collider not set as trigger. This collider is attached to Hero RigidBody.

Problem is that my hero is pushed by the Quake Spell collider too.
Do you have any idea about resolving it?

I tried to disable collisions between a same layer, no effect.

Thank you in advance for any answer!

 

I found the real issue. Child object collider doesn't affect parent, parent was colliding with another object in scene