Bloated food packages can mean very different things depending on what’s inside. While some swollen packages are completely normal, others may be a warning that food is no longer safe to eat.

A puffy chip bag, for example, is nothing to worry about. As the original article explains, **“The ‘extra air’ is usually nitrogen,”** which is added to protect chips from breaking during transport. This makes the puffiness intentional, helping snacks stay fresh and crisp instead of crushed.

However, swollen packaging is a different story when it comes to perishable foods such as cheese, sausages, dairy products, or canned goods. In these cases, the expansion is often caused by gas released as microorganisms grow inside the package. While some microbes simply spoil food, others may pose serious health risks. That’s why the article warns that **“bloated packs of refrigerated or canned items deserve zero benefit of the doubt.”**

To reduce the risk of foodborne illness, store refrigerated foods at the proper temperature, keep canned goods in a cool, dry place, and always inspect food before eating. Check expiration dates and look for unusual swelling, leaks, unpleasant odors, or changes in appearance. Even if a product is still within its use-by date, damaged or inflated packaging should be treated with caution because contamination may have already occurred.

When in doubt, it’s always safer to throw questionable food away rather than risk getting sick. As the article concludes, **“If a package looks oddly inflated or the contents smell or look off, throw it away.”** Paying attention to swollen packaging can help you tell the difference between food that is safely protected and food that should never be eaten.