For cleaning plush toys that can't be washed or you're just not sure on how to clean them and want to be safe, use the the surface dusting cleaning method.
This method will clean the surface and get rid of odors;
Place the plush toy in a large zip lock plastic bag with one or two cups of baking soda or cornstarch. Baby Powder will work fine also as it has cornstarch in it. Shake vigorously to coat the entire toy, then leave the bag closed for one or two hours to allow the powder to absorb odors. After this process is done, take the toy outside and brush it lightly with a soft brush to remove the powder. Even better, use the vacuum cleaner.