Burping, slurping on drinks, licking fingers and leaving Tupperware in the fridge also feature.
Bringing smelly food in to eat is the biggest faux pas people can make when having lunch in the office.
Research commissioned by Betway found the biggest pet peeves workers have when their colleagues eat 'al desko'.
Also in the top 10 are leaving dirty plates on the side, talking with your mouth full and making loud noises while chomping on lunch.
Burping, slurping on drinks, licking fingers and leaving Tupperware in the fridge also feature.
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