Home / Outdoors / Bleach the cooler. Then let baking soda finish the job.Outdoors bleach cooler let bakingBleach the cooler. Then let baking soda finish the job.The fastest way to fix a fish-smelling cooler is a hot soapy scrub Shop coolers on Amazon As an Amazon Associate, Work Notes may earn.Related NotesExploreExploreExplorePrevious Bleach won't fix a smelly cooler.Next Bleach kills cooler mold. Use bleach.