Perhaps your best source of information would be Todd Basso who is the head of golf course operations.
Todd.Basso@thevillages.com
He is very responsive and if he does not know an answer will forward your concern to someone who can answer. Alternatively contact the Cane Garden Country Club at 751-7029 as they manage Red Fish. Google does not identify a product named Sludge rather it seems to be a generic term for treated human and animal waste. If you had a manufacturer name you could contact the manufacturer for information on odor duration. Last year they used what I was told was a turkey waste pellet product on Evans Prairie which smelled in the heat of the summer for less than one week.