Has oatmeal gone bad if it smells funny and tastes when cooked?

It's possible that the oatmeal has gone bad if it smells funny and tastes off when cooked. Here are a few reasons why this might happen:

1. Rancidity: Oatmeal can become rancid if it's exposed to oxygen and light for too long. This can happen if the oatmeal is stored improperly or if the packaging is damaged. Rancid oatmeal will have an unpleasant odor and taste.

2. Mold: Oatmeal can also become moldy if it's exposed to moisture. This can happen if the oatmeal is stored in a humid environment or if it's not properly sealed. Moldy oatmeal will have a visible growth of mold on the surface and will taste and smell musty.

3. Infestation: Oatmeal can also become infested with insects or other pests if it's not stored properly. Infested oatmeal will have visible signs of infestation, such as holes in the packaging or webbing. Infested oatmeal will also taste and smell unpleasant.

If you're unsure whether or not your oatmeal has gone bad, it's best to err on the side of caution and discard it. Eating spoiled food can cause foodborne illness, which can lead to symptoms such as nausea, vomiting, diarrhea, and abdominal pain.