If you're wanting to wash quilts and give them as odor-free as possible, then use detergent that is "free and clear" and no fabric softener. My quilts have come out soft w/o softener and w/o static. Definitely wash on cold with a couple of color catchers for peace of mind.
I have given quilts using whatever detergent I was using for my own laundry, and all recipients have said they love the smell. Arm & Hammer, Tide, Purex, Dreft...I've used them all. But if I were aware of a recipient having an issue with detergents, I would probably wash in Dreft and use vinegar the load to rinse out even that smell.