I think I might have tossed it to be on the safe side.
I have sympathy for the folks who are food compromised; however, we all waste food now and again due to various factors. For instance, I don't require that my kids eat every bite of food on their plates. I do tell them to take only what they can consume, but it's not an exact science.
Consistent and ongoing waste of food indicates a condition that needs to be addressed.
The disposal of one box of Stovetop is probably not a red flag that an issue exists.