How do you know a carton milk has gone bad?

Smell it: Spoiled milk has a sour, rancid, or off smell. Fresh milk should have a slightly sweet, clean smell.

Taste it: If the milk tastes sour or off, it's best to discard it. Fresh milk should have a sweet, creamy flavor.

Look at it: Spoiled milk may have a curdled or chunky appearance. Fresh milk should be smooth and uniform in texture.

Check the expiration date: Milk typically has a shelf life of 5-7 days after the date it was pasteurized. Check the expiration date on the carton to make sure it's still good.

Look for signs of spoilage: If the milk has any mold, discoloration, or other signs of spoilage, discard it immediately.

It is important to always err on the side of caution when consuming milk. If you are unsure whether or not it has gone bad, it is best to discard it.