Instruct: Classify a given Amazon review as either positive or negative.
Query: Excellent idea, but smells

On the upside, delivery was fast and the pillowcase seems like its pretty good quality. I appreciated the instructions that accompanied the pillow. Overall, I had high expectations for this pillow, but it smells. I've tried leaving it to air out with the zipper open as well as out in the sun for about two weeks. I finally tried sleeping with it and I've had headaches everyday since. I finally gave up last night when I woke up with a headache ... I'll try airing it out in a separate part of the house, hopefully the odor goes away and I'll try again in a couple of months, but its a little frustrating. I wish the hulls were aired out for quite awhile before they were added to the pillow.