This applies to food, but also could apply to many other things. If you find yourself debating whether you should eat that piece of chicken that's sat for too long or that one piece of food that doesn't look or smell quite right, don't. Unless you're in a life or death situation, throw it out.
For cheese and bread or anything that can get moldy, you can't cut out the mold. Even if you cut it out it will have grown micelles all around the food. For meat, if it feels slimey, is concerningly discolored or smells of ammonia, DO NOT EAT.
For rice, do not keep it isolated in a warm and humid spot (e.g. sealable bowls) and leave it. Any starchy food that has been kept at room temperature for more than a couple of hours runs the risk of poisoning you.
For rice, do not keep it isolated in a warm and humid spot (e.g. sealable bowls) and leave it. Any starchy food that has been kept at room temperature for more than a couple of hours runs the risk of poisoning you.