@Kynos Guy the Ghouls said, "you entered through our emergency exit in case of some bounty hunters and stuff. The entrance is further down the pipe, there is a big feral troll ghoul that refers to himself as Grog, his name is George but he does not seem to remember that. Anyhow, he is well fed and will probobly not be aggressive unless provoked. Try not to provoke him when you get out, unless you want to join the flesh eating club. "
"Hi, nice operation you've got here. Do you have cybereyes to do your work?"
Guy say "No our regular eyesight, oddly enough we were recently infected with an unknown brand of a desiese, we get to keep our eyesight but cannot smell. Grog is our patient zero, but we have not yet figured this stuff out. We weren't infected until recently this is why we needed so many rats. This is water under the bridge tough, life continue and even the undead need to make a living... what brings you to here?"
If there is anything that makes you believe their story is how open they are with you, ghouls even these that keep some of their humanity are typically paranoid of hunters turning them for their reward (5k a piece in the UCAS). These guys practically were about to offer you coffee if they had any.