An ex-flight attendant has revealed the heatwave-busting items, such as fans, that could spell danger on board.
Skye Taylor, as she’s known online, often hits the headlines with her expert travel tips, tricks and secrets.
The 50-year-old, from Southampton, recently shared the three items cabin crew must carry onboard with them at all times under international law.
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The UK is set to be hit by another heatwave in a few weeks’ time, with temperatures reaching a scorching 31 degrees.
And Skye is urging travellers not to pack certain cooling items, as they could spell disaster.
“People bring dangerous items, like their own fans,’ Skye told Need To Know.

“Or a bottle that keeps things hot or cold, that has a battery in it.
“Anything powered by lithium batteries is really dangerous on board.
“And trying to explain that to passengers is quite difficult.
“It’s mostly parents, which is hard, as kids do get quite hot – and you can be sat on the runway for a long time.
“They think [these items] are safe, but they’re not.
“Just be careful what you’re bringing on.
“Some products are potential fire hazards.”
Skye urges people to especially avoid bringing items from budget websites, as it’s not always clear what’s exactly inside.
But there’s one item that is allowed on board – that many travellers forget.

She said: “Nobody brings water.
“Once you’re through security, you can bring as much water as you like.
“You always get people saying they’re so thirsty, but we can’t open the bar until we’re up in the air.
“Obviously we have water, but we can only load so much, as there’s not loads of space.”
Skye says passengers must remember that instead of getting stressed about being too hot, it’s best to alert a member of the cabin crew.
She added: “It’s what we’re there for, to help.
“I don’t expect any person to know the rules and regulations of aviation or an aircraft.
“But until the engines are on, it can’t get any colder.
“The last thing we want is to have our passengers on board feeling the heat and getting stressed.
“But we’re also warm; we’re working through that, too.”