Wash the wet okole covers there neoprene just put them on a delicate cycle in the washing machine. If the whole vehicle smells see about renting an ozone machine and let it run for a day or two. Works very well.
I'd imagine if prices havent increased you would be looking at 5-600 bucks for wet okole seat covers. They are well worth the investment. They fit awesome extremely durable easily washed and look great. I had a set on my 96 blazer for probably 5 years and when I washed them they still came out...