Accordingly, cAN expired M&Ms make you sick?
M&Ms are not particularly nutritious, but there should be no hazard in eating expired M&Ms that wasn't there the day they were manufactured. So, they may begin to taste funny over time, but you could probably eat them years after they've expired if they were kept in a dry place.
Subsequently, question is, can M and Ms mold? The only way for a hard candy like coated M&M's to grow mold is if they get wet so some of the sugar dissolves and then as long as moisture is there, it will grow mold. In small quantities such as you describe, it is mostly harmless. The first thing is what you noticed as an off taste.
Moreover, how do you read an M&M expiration date?
The first three digits of that code represent the made on date. The first digit is year and the next two digits are the week of the year it was made. So your bag of M&M's was made in May 2011!
Do skittles go bad?
Actually, no, pure sugar really does not have an experation date, all you have to do is store it properly and it should be good for ever. The chemicals in almost all processed foods DO have an expiration date though. why don't the people who make skittles package them in certain color combos?
