For situations like this, I don't bother to ask if anyone needs loot from said dungeons regardless of what dungeon it is. Instead as a tank I take the time to look at all party members search info. Thus prompting two options,

1. If this is their first time in the dungeon and/or they are level synced or this is their first class they are leveling then I clear all rooms and I roll pass on everything because chances are my party members could use the gear more than I can.

2. If none of the above applies in the first requirement then I clear mobs and take the direct routes to the bosses.