Smelly Ole' Cooler

Once in a while I stop at a local church and bring home fried fish sandwiches. To get them home while they're still warm I keep an old foam cooler at work to put the sandwiches in for the trip. It keeps the heat in and also contains the smell. My car doesn't have the odor of fish and we get warm food.
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After dinner I put the open cooler outside to air out so I can take it back to work for the next time. But I have to put it in the garden to keep the little dog from tearing it up. She would love to get to it.