is it possible to assign a filter to apply only on a specified material I found out this custom filter with a bloom effect giving a glow effect. My question is, is it possible to make the filter specific to a specific material making it the only one glowing to simulate light glow?
Yes it is. Use material IDs to mask certain areas of the image.
I think the manual page gives you all the information and examples you need:

https://www.blender.org/manual/compositing/types/converter/id_mask.html