Purina ONE Mini Delicate Salmon & Rice - dog dry food

We have been buying this food for many years and only this variety! Unfortunately, since the last order (3 × 800 g), we have been disappointed. As soon as you open the bags, there’s a very strong smell of vinegar. Also, the contents look different than usual. By now, I’ve opened all three bags and the same problem is present in each one. Our poodle even avoids the food and runs away as soon as he smells it, which is such a shame!!!