If one has property in non Jew's house for storage that is chometz and one pesach the owner forgot about this chometz.
The nature of the storage being unpaid for and not even set aside in a specific location with only his property but left in a closet with the non-Jews other property to be kept safe. The owner of the property is not likely to use the items specifically but is not likely to do so as a result of having celiac which would make this person unable to consume most forms of chometz.
Since one disowns chometz that is not known about does this chometz become forbidden to the owner when they remember that it belonged to them many months later after chometz?
Does the status of the chometz change at all if every other year after this he remembers to sell this chometz before pesach?