Most plane passengers are not aware of this area.
Elaine Harris completed the 10-day challenge by hitching lifts from lorry drivers, tractors and alpacas.
"I still have flashbacks to that time I found a verruca between the seats."
"Just another confirmation of how disgusting people are"
Ever wondered why flight attendants adopt the polite posture?
The science behind the symptoms – and top tips on how to avoid them from a sleep expert.