Maggi — Smell in atta maggi

I love atta maggi. Last i had atta maggi in india only 5 years back. Whenever i buy atta maggi here in US there is a strange smell we realize when we eat. And this i have tried in quite few cities in US. I always check the expiry date before i buy but still smell is same. This kind of smell we never found in masala maggi. I really dont know whats the reason of that stale smell. Because of this we sctually stoped having atta maggi in US and prefer masala maggi instead.