My initial thought on pulling the cork and sniffing was that this wine was suffering from mild corking, while this mainly blew off in the decanter I was haunted by the memory of it.
classic middle weight Brunello profile in the glass, colour was dull rust ruby, needed 1 hour in the decanter for the middle palate to fill out, juicy small berries with a tobacco leaf overlay, still some fine grained tannic structure providing an energetic finish with the balanced acidity. Overall a nice “little” wine that went well with dinner