It is NOT safe to cover the airbags. Even if the covers have special stitching, it WILL still hamper/affect the proper inflation of the airbag. Don't risk your safety just because you want to keep the seats clean. No need for fabric protection either. Most seat materials are now water, stain and dust resistant already. There are also several types of cleaners in case the seats get smudged. Search online for how manufacturers select the type of seat materials.