Reply To: How to create bloom on specific objects and not others

Sure, it would look somewhat like this:

After activating the Emission pass on the right, you’ll get the output in the render layers node in the compositor, which you can then bloom independently. The thresholds of course depend a lot on your individual scene.
Depending on how the strengths are on the various surfaces, the threshold might not get you there. In that case the cryptomatte method might be better, or render layers, which is a more extensive topic. Lots of info on that though in the CORE Compositing, which is excellent.