I use a product called Delta Ceramcoat. It can be found in most Arts and Craft Stores. Comes in Matte, Semi, and Gloss. The Matte dries dead flat.
It has no odor, Cleans up with water, Dries in 10 minutes, and best of all no mixing. Just shake the bottle vigorously or use a paint mixer( it will settle on you in the bottle if you let it sit for on extended period) , pour it in your A/B or brush it on and you are done. Wait 10 minutes and you can put on a second coat.
HTH Paul