Smelly Clothes + Hard Shell Suitcase

I have one of those aluminum hardshell suitcases from Away. It makes the clothes I pack in it have a bad smell. I figured it was probably because I’ve put dirty polyester shirts in it when traveling back home. So I wiped it down with Clorox wipes inside and out, I put two of those boxes of baking soda that have vents for the refrigerator in it overnight and before my most recent trip put a bag of activated charcoal in it. The first two days there was a slight smell but not as bad as before. I am on day 3 and now the same old smell is back in all of my shirts. I hate it. I originally planned to immediately pull all my clothes out and put them in a closet or drawers but this tiny hotel room doesn’t have either so I’m putting dirty clothes on the floor next to it and keeping clean clothes on the suitcase trying to avoid the smell. Any advice? Do I just need to give up on this expensive suitcase?