Can you get food poisoning from chestnuts?
“They’re poisonous.” Still, unless you down a lot of horse chestnuts, they’re more likely to make you ill than kill you. Horse-chestnut poisoning is rarely fatal, according to the Web site of Canada’s Nova Scotia Museum, though effects can include vomiting, loss of coordination, stupor and occasionally paralysis.
Regarding this, How do you know if chestnuts have gone bad? Signs of Spoilage
Chestnuts can get moldy or inedible and dry if they get too old.