Quilts are not fire resistant- cotton burns. Doesn’t matter if it’s old or new- regular cottons or chenille.
even fabrics that have been treated - the chemicals used wash away.
our local quiltshop carries chenille fabrics- I’ve made a few really wonderful baby/ kids Quilts using chenille and flannel squares. I do use batting and I quilt the quilts. They are warm, cozy and much loved. They launder wonderfully and just get better with age/ use.