tl;dr some airlines have poo in their water. Best advice is to treat any water not coming out of a bottle on an airplane as non potable. Wash your hands with it

tl;dr some airlines have poo in their water. Best advice is to treat any water not coming out of a bottle on an airplane as non potable. Wash your hands with it and that’s about it and even then a good hand sanitizer afterwards is a good idea.