When traveling by plane, you need to follow some rules. One of them was named by a British doctor.
Walking barefoot through an airplane cabin represents...great health hazard. You could catch a fungus or simply bring a lot of harmful bacteria home or to a hotel, says podiatrist Ebony Vincent.
Also, according to one of the guides, the toilets on the plane are washed only at the end of the route. Therefore, you cannot go there without shoes.
Former pilot Tony Kuhn added that in a plane crash, the lack of shoes can prevent you from getting to a safe place. In addition, you may get in the way of glass or other debris.
Source: Inosmi