Come on Celtic, you really need to step up your personal hygiene game!
There's plenty of things you need to remember when you got to a football game, your keys, wallet and make sure you've got your bets on.
However, Celtic have had to remind their fans to do something you would hope everyone was doing daily...have a wash!
Yep, a group of Celtic fans were sent a letter to ensure they've had a good clean before they come to Parkhead, because some of them have been stinking of BO.
So, who would complain about smelly football fans? Well, some not so smelly fans who claimed that the odour had affected their experience!
Let's be honest, we've all had to sit next to someone who stinks of BO or should probably have washed they hair before coming out – but has it actually ruined your experience?
One thing we would love to know is... who are the smelliest fans in the UK? We're hoping Opta get their fingers out and give us the stats!