Instruction: Generate an answer to the question by utilizing the information contained in the document.

Input:
Question: Do I add my own personal pillowcase?
Document: In the unceasing search for the ideal pillow, I purchased this on sale at Costco for a terrific price. As to be expected, the odor was a bit much so I aired it outside daily, washed its cover, which helped a lot, and used my own pillowcase. While the cooling gel was moot for me, I did find it was still perceptible through a personal pillowcase.That said, I'm returning the product after a week's use. Not because of any odor or poor quality. On the contrary, it's a quality product.
I like foam pillows vs feather ones and this one is one to add to your collection. I just had major surgery and this was perfect.
It's a personal thing, my pillow needs to be cool but this one wasn't . sorry,  my own opinion. Also, it was too think for me
Follows through on it's promises at a reasonable price. The smell is the standard for memory foam so be sure to air it out well. It's not spelled out in any literature but on the website FAQ from the manufacturer it does state that using a pillow case other than the one that is provided can affect the gel's ability to dissipate.They manufacturers website recommends using a very light material if you use your own pillowcase and, reading between the lines, I think it means INSTEAD of the provided top layer that comes in the package.
I found this pillow at a very discounted price at our local Costco in June, 2012 (so shop around!) Yes, it does smell. Yes, you need to follow the directions that came with the pillow. It needs to air out for 72hrs. I'm sensitive to smells, so I gave it a week. It comes with its own pillowcase and that's the one you have to use, otherwise you won't get the cooling effect. This pillow is so fantastic for summertime! I sleep on my side and my husband sleeps on his back.
The pillow is wonderful. It's heavy for travel, but it has a lot of support.The first three months my pillow cooled the side of my face and neck fantastically.It has become less cooler since then. It still works though, and it's very noticeable after notsleeping on it for a little while. Keep in mind that the fabric of your pillowcase can definitely hinderit's cooling abilities. Cotton seems to work the best. Wish my pillow still cooled so strongly, but it's still betterand cooler than a pillow without the cooling abilities.
This was my experience as well. Add too much fabric to the equation and it just doesn't seem to keep up with your body heat. After reading this I tried it both without my own pillow case and again with a pillow case instead of the top layer that came in the box. Both allowed for much improved performance than when I initially just added a third layer to the foam without thinking about it.I definitely recommend trying a product like this for people who sleep hot. The negative reviews here seem to be more directed at the technology and a misunderstanding of how to use/care for it than at this pillow in particular.
Quick delivery! Just as I expected. Comfortable pillow.
This pillow does not work for me. It's way too hard & not cooling at all. I do not recommend!
am very happy with this pillow, it is very comfortable. I have neck problems and so far this has helped.
Answer: It comes with a thin pillow case, but you can add your own over top if you like. After a few hours of opening the package, we were unable to smell any fumes. We love this pillow!