SCOTT Mills has opened about the challenges of filming Celebrity Race Across the World.
BBC Radio 2 presenter Scott and his now-husband Sam are one of four pairs taking part in the gruelling BBC competition.
Speaking to , the star revealed he'd asked producers to halt filming while he faced rough symptoms for three days.
He added: "I started getting these mad headaches – I don’t get headaches – but I was getting really awful ones to the point where one day I said, “I can’t film today, I’m really sorry.”’
"Obviously, there was a medic there and he made sure I ate and that I had some tablets to try and get rid of it but it wouldn’t go for three days."
Scott feared he'd contracted dengue fever, as an outbreak had swept over Brazil.
,ore on Race Across the World
Fortunately, this proved not to be the case as Sam discovered the real cause of what had happened.
The radio host revealed: "Sam said, “When was the last time you had a coffee?”,which led Scott to realise he'd experienced a "massive caffeine withdrawal."
This series sees the pairs travel from Belem, Brazil to Frutillar, Chile with limited resources, no internet, and a tight budget.
Aside from a lack of caffeine, Scott revealed he struggled with other aspects while filming.
Most read in Reality
The star admitted he thought a particular bus journey was "the end" for him.
He added: "It was a heatwave and we were on a bus and the air con didn’t stretch as far as the toilet, so as soon as you went into it it was 50C.
"Someone had just had a poo in there and I was just spewing, spewing, spewing, spewing. And I actually thought to myself, “This could be the end.”
"I couldn’t stop being sick. All I could smell was hot poo. I was like this is the grimmest thing I’ve ever done."
The bus drama didn't end there, with a different journey seeing the vehicle break down, leaving its passengers stranded for "hours".
Also competing are Jeff Brazier and son Freddie Brazier, as well as Kelly Brook and husband Jeremy Parisi.
Race Across The World - Winners so far
Since launching in 2019, BBC travel competition series Race Across The World has had four series to date. Let's take a look at back at the winners so far...
- Series one: Elaine and Tony Teasdale: This married couple, who are retired PE teachers, won the very first series of Race Across The World.
- Series two: Emon and Jamiul Choudhury: The uncle and nephew duo emerged victorious in the show's second outing.
- Series three: Tricia Sail and Cathie Rowe: These lifelong friends became the first non-familial pair to win a series.
- Series four: Alfie Watts and Owen Wood: Both aged 20, these friends bested four other pairs to win series four.
Completing the line-up are Ted Lasso actor Kola Bokinni and his cousin Mary Ellen Moriarty.
The first celebrity edition, which aired last year, ultimately saw weather presenter Alex Beresford and his father Noel triumph.
READ MORE SUN STORIES
Who will follow in their footsteps?
Race Across the World airs on BBC One and iPlayer.