With any product there is going to be some concern over the possibility of staining or whether the dyes are color fast.
I can say that I've been very happy with unscented Fabreeze on cotton fabrics. It can be a little hard to find the unscented but is worth it.
https://www.febreze.com/en-us/produc...her-scent-free
You can also try packing with layers of baking soda (which can be in a pillow case. I would keep it as open as possible instead of folded, maybe if you have a spare bed you can I've also had good success with removing car odors with charcoal packets.
https://www.amazon.com/charcoal-odor...+odor+absorber
I know there are claims of ionizers working well, but don't have direct experience or know where to go to find them. Maybe a company that offers after disaster/fire clean up can give you some recommendations??