I agree with Michelle that the Prismacolor markers seem to have a stronger odor than other alcohol markers (and I do not have a sensitive nose.)
I got a few of them on ebay when I first started experimenting with different coloring mediums. It was an asssorted motley group of colors, but the price was right, lol.
The only ones I really have used much are one called Eggshell for faces, and a color called Brick White which is a nice off white that I've used for Polar bears at Christmas.
And for bunnies at Easter.
To tell the truth, I've used my Bics and Sharpies with more success than the Prismas.