Glamour model Michelle Marsh admitted that she could not see herself having sex with her husband in an airplane bathroom.
"I don't know how anyone could do it in those stinky little toilets, there is no room in there whatsoever," she said. "If I had the whole plane to myself and you could use the seats then fair enough, but not the little loo!"
Ex-Hear'Say singer Johnny Shentall speculated that he could get kicked off the show for sneaking off with his wife Lisa Scott-Lee. "It's good to joke about it but there'd be serious consequences if we got caught," he said.
Scott-Lee added: "Are you talking about the mile high club? We're already members."
Blazin Squad's Kenzie was less forthright when asked, joking: "Since I've joined CelebAir? I've had no time. No I haven't. That'd be good - eight cameras outside the door [and] mic'd in the toilet."
CelebAir begins Tuesday, September 2 at 9pm on ITV2.
> Tube Talk: CelebAir's inaugural flight