I have 20 , 5 gallon pickle buckets. I have washed them with dawn dishsoap, rubbed the insides with lemon juice & baking soda, poured straight bleach in them , let them sit awhile & rinsed them out.

After about 10 minutes the pickle smell is back as strong as ever. How do I get rid of the smell?

I have gotten these buckets & lids before & never had any problem getting the smell to leave.
I would try letting them sit in the sun if the sun would ever come out here for more than 10 minutes.

TIA