Maximum suckage! And here we go with the random cold advice that people oft give out: Have you tried a vaporizer/humidifier/thingie? If you add menthol, that might help stuff. I had this waterless one once, and it had a slot to put the menthol in. It was great, all except for a green light. I don't know what it was supposed to be for--a nightlight, maybe?--but green is not a color you want to look at in the middle of the night when you're sick and trying to sleep.

P.S. I'm a teeny bit addicted to menthol. I think I'm allergic to this town I live in, because my sinuses are constantly overactive, so I keep a jar of menthol handy at all times. The smell is emotionally satisfying, too. X)