User blog comment:Hayden Cross/Gray and Silver/@comment-31.132.65.60-20140312123847

Does smell have anything to do with family relationship? You don't smell just like your parents. No people smell the same. I think even Wendy somewhere said that she could tell Jellal and Mystogan (who are identical) apart by their smell. Beside, many things affect the way you smell like diet or the place your living. I don't thing Silver is related to Gray, it's something more ambiguous.