Adjacent rooms with chemicals

Hello, We have two chemical storage rooms that are adjacent to one another and share a common wall. Each of these spaces will have its own exhaust. We were wondering if it would be acceptable to have the deck-to-deck partitions create a border around the outermost perimeter of both rooms rather than have each room have full deck-to-deck partitions along all four walls. This strategy would separate the rooms containing chemical from the rest of the building, but the shared wall between the chemical storage rooms would not have a full deck-to-deck partition. Thanks. Thanks.