Need help creating emmissive materials

[TheNormalStudent]

Hello! I've created a small model in blender and exported it as a .glb file.

Now i need to interact with it. One of my interaction is making a glowing outline as user hovers mouse over it.

Unfortunately, I struggle to create a halo glowing.
I traverse scene, get the 3d objects in it and then just try to set the material of objects to be emissive.
Of course I'm doing that using pure JS. So

obj.material = ...

And NOT with JSX and

<mesh ref={glowingRef} position={[1.5, 0, 0]}>
        <boxGeometry args={[1, 1, 1]} />
        <meshStandardMaterial
          color="hotpink"
          emissive="hotpink"
          emissiveIntensity={2}
        />
 </mesh>

The problem is that without post processing it won't work (which is pretty logical), but the thing is that when i apply post processing then all of my objects start to glow. Even if they have different, not emissive material. What should i do?