Glad SMELL was brought up! It nearly slipped my mind, that I can keep MILK past its expiration date, and every sniff so far, has deemed it drinkable, (though my wife & daughter still avoid it like the plague!) until my recent purchase--from Save-A-Lot!
The Whole Milk was passable (date was 9/26), but the 2% reeked to high-heaven! The date was 10/1, but got pretty iel-stinko! nearly retched even before I took off the lid, so not wanting waste food just took both jugs over to my dad to give to his cats (one in the house, the many others are strays)...!
-- Dave