Vacuum sealed pack and chemical smell

We always always buy Maggi 2 minute noodles for our kids, my husband wanted to make one and when he opened the bulk packet, there was 1 pack that was vacuum sealed which is very odd because we've never had any noodles vacuum sealed. And when my husband opened it, it smelled like chemicals. So he he open another bulk packet to see if it the smell was the same and that packet was normal. Really not impressed because my kids love maggis noodles.