What three different scents do the three farmers produce, according to Mr. Fox?

Mr. Fox tells Mrs. Fox that she need not worry about his safety, since he can smell the farmers from miles away. He says, "Boggis gives off a filthy stink of rotten chicken-skins. Bunce reeks of goose-livers, and as for Bean, the fumes of apple cider hang around him like poisonous gases" (9).