Our little one has nasty cedar/oak/goldenrod/etc, etc, allergies, too. (Year-round! Fun!) When she was about a year old, we started her on nightly Zyrtec, but yours is probably still way, way too young for that. Anyway, I would suggest a cool mist humidifier (the warm ones can get very hot - I've been scalded before, and I just wouldn't want one in the house). Close the bedroom door, and let it run for a few minutes before bed to get started on a nice fog. Don't bother putting anything in it - it just sprays w/ the water all over the room. However, the Vicks brand humidifier has air filters that will help clean the air up a little bit, so I'd try that. We've been happy with ours. Also, put either filtered or distilled water in it - the hard water in this part of Texas will leave a calcium deposit film all over everything that is just annoying to clean up, if you go straight from the tap. (It won't hurt anything, just spray a nice, even whitish film.) Also, roll a towel or blanket and put it under her bassinet/crib mattress, to elevate her head a bit. She may still spit up from the sinus drainage, but she'll breathe, and sleep, better. Hang in there, mom.