If a seller refuses to fill out a property diclosure statement, do you still want the listing?

From one prospective it is a red flag but under certain conditions I understand the sellers position. In a residential transaction for a property with many people on site full time, managing grounds etc. The seller may not have knowledge of a specific item yet could be held accountable by association.....he should have or could have known about the issue.

I'm told that a good lawyer can create language to hold the seller harmless if the buyer signs it. Is this true and if so what does the agent  have liabilty for. I would think it would be business as usual  provided both parties to the transaction act  under  a purchase agreement  with full knowledge of  this non-disclosure.