I'm not sure how to tell if milk has gone bad. What does it smell like? The other day I let the babysitter give ds milk from a bottle that had been frozen. I don't really see how it could have gone bad, its been in the freezer for about 2 months and I think it had been in the fridge for maybe 3 days before that. Shouldn't that be alright still? Anyways, he didn't want to drink more than a few sips, and when I smelled it I wasn't sure it smelled right. Not really gross or anything, just not what I thought it would smell like. And would drinking a few sips of that make him sick?