New or old cooler or plastic container smells a little funky? Try this instead of baking soda.....
Clean container with soap and cold water. Rinse well and dry.
Grab a few cigars that suck (3-4-5), the bigger the better and crush them up good (destroy them).
Dump it in, close lid and let sit for a week or so.
Smell is now gone and only smells like tobacco initially which is fine.
If the odor was very bad, after a few days of just the tobacco throw in crumpled newspaper for a week or so.