Smell can hurt the grade. Overstreet mentions odor in their grading guidelines. It can turn buyers off. On a nice, dry, sunny day, try leaving them outdoors, sheltered from birds flying overhead. Some people recommend unscented fabric sheets to help remove smells. Some people enclose the books in comic bags and put that in or on top of kitty litter.
I would not dry clean or certify those comics, especially the Ms. Marvel. You might be able to sell them here, especially if you have a forum member who can vouch for you.