If you thought refrigerating your food based on food safety rules or the package instructions was enough to keep it fresh, there are gadgets and gizmos that exist to prove you wrong. Enter, the Shelfy smart refrigerator device which the Vitesy brand says extends food freshness up to 12 days while also removing bad food odors. During early Black Friday deals, it’s up to 35% off, making it just $117, and we got to test it out for ourselves. While testing out the device, I was happily surprised with its performance, but…