Is four year old evaporated milk dangerous to use?

Using four-year-old evaporated milk is not recommended, as it may pose health risks. While canned evaporated milk has a long shelf life, it typically lasts 1-2 years past its expiration date if unopened. After four years, there's a chance it could be spoiled or have compromised quality, which could lead to foodborne illness. Always check for signs of spoilage, such as off smells or unusual appearance, before use.