I implore you to read this letter of complaint over at Letters of Note. I think this is my favorite part:

I constructed a stink-shield by shoving one end of a blanket into the overhead compartment — while effective in blocking at least some of the smell, and offering a small bit of privacy, the ass-on-my-body factor has increased, as without my evil glare, passengers feel free to lean up against what they think is some kind of blanketed wall.