Yes, spices can go bad over time. The shelf life of spices varies depending on the type of spice and the storage conditions, but most whole spices will last for about 2-3 years, while ground spices will last for about 1-2 years.
However, factors such as exposure to light, heat, moisture, and air can speed up the spoilage of spices. When stored properly in a cool, dry, and dark place, away from direct light and heat, spices can retain their flavor and potency for a longer period of time.
It's a good idea to check the expiration date on the package and give your spices a sniff test before using them. If the spice has lost its aroma or has an off smell, it's best to replace it. This will ensure that your food has the best flavor and that you're not consuming any spoiled or potentially harmful spices.