It's a little strange to imagine a situation where someone could be too careful, too clean, or too friendly. These are all things we generally want people to be, but many of us can name a time where someone was friendly to the point of almost seeming creepy.
And while this type of person can be chattier than we might like if we find ourselves next to them on a plane, there are so many other pitfalls air travel can bring us that it's easy to forget we can even have this problem.
But as one woman's story illustrates, there's a lot more trouble we can get from a passenger who seems a little too friendly then just a mild sense of discomfort.