Celtic have confirmed they wrote a letter to their fans reminding them to wash before a game.
The intervention came after supporters complained about a fan with excessive body odour.
Season ticket holders in the main stand at Parkhead - where the smell was originally reported - received the letter from club officials.
Celtic's supporter liaison officer, John Paul Taylor wrote on Twitter: "I can exclusively reveal its genuine, dispatched at the request of incumbents within the locale."
His tweet has since been deleted.