Do you have an old pickle or jam jar that you would like to reuse? Say perhaps for a candle jar? Or to store other items? But you've noticed that even though you've washed the jar and it is clean, it still smells like what it used to hold? I have several jars like that - I've been saving them to pour some jar candles. What to do with those old pesky smells? You can use plain old table salt to neutralize the odor. Pour a little bit of salt in the jar, add some water and let it sit for 30 minutes. Put the cap on, shake the water around, and voila! the odors should be gone.