I̶'̶m̶ ̶n̶o̶t̶ ̶s̶u̶r̶e̶ ̶a̶b̶o̶u̶t̶ ̶.̶b̶l̶s̶,̶ ̶b̶u̶t̶ ̶a̶ ̶.̶b̶l̶b̶ ̶p̶r̶o̶b̶a̶b̶l̶y̶
Scratch that, yes, I think it would be possible, though I'm not exactly sure how .obj files are read so my interpretation is useless
edit2:
back to my original thought after looking at .obj files, and no I don't think it is possible