Air travel is always a dicey game; you never know who you're gonna end up sat next to or if anyone's gonna get proper plastered and kick off.
However, generally, you can rest assured that the entire cabin is not going to become some giant sh**ty slip and slide. But that's what happened here:
As passengers on a Delta flight from Atlanta to Barcelona discovered recently, you really have got to be ready for anything.
Their flight was only a couple of hours into the journey when a foul smell began to fill the cabin.
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But the unpleasant odour was the least of their worries when someone's insides began to trickle down the aisle.
According to reports, one of the passengers had had an upset tummy and attempted to get to the toilet, but was sadly too late.
The sudden bout of diarrhoea exploded into the cabin, with the flight forced to return to Atlanta as a result.
LiveATC.com managed to capture the pilot relaying a message to ground control explaining the situation.
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“This is a biohazard issue,” the pilot said.
“We’ve had a passenger who’s had diarrhoea all the way through the airplane, so they want us to come back to Atlanta.”
But now, footage has emerged from inside the aircraft, showing the clean-up operation in full flight.
In the brief clip, paper towels can be seen covering the aisle, trying to clear away the various streaks of brown sludge.
Commenting on the post, the brother of one of the passengers said he found it hilarious.
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"Haven’t laughed harder than his phone call to me at midnight to explain why he was still in America, they wrote.
"He said it was the funniest thing he’s ever experienced."
The same, however, cannot be said for those who actually lived it.
One person responded to the viral post on Twitter saying it was the worst smell imaginable.
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"My partner was on that flight! It was pretty bad. It was dribbled down the aisle, smelled horrible," they said.
"The vanilla scented disinfectant used on it only made it smell like vanilla s**t.
"After the plane landed, it was thoroughly cleaned. They didn’t leave until around 2:30 am."
Another person who says they were on the flight told the Daily Mail: "Both my wife and I were on the flight. It was a mess. The pilots made the right decision to turn around.
"The ground crew ripped out the carpet and put new in.
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"Considering the circumstances, the ground crew did a great job, along the attendants and the pilots."
A grim reminder to everyone of the importance of packing extra undies in your carry-on luggage.
Dominic Smithers