What’s the best way to get rid of smells from old plastic Tupperware? Got a huge batch from nana but the smell is crazy bad

5. Lemon Juice Rinse
Lemon has natural freshening properties. After your usual washing routine, rinse the Tupperware with lemon juice or rub a cut lemon directly onto the plastic, then place the containers in the sun to air dry. The combination of the lemon’s acidity and the sun’s ultraviolet rays can work together to break down and neutralize odors.
6. Activated Charcoal
Activated charcoal is another fantastic odor neutralizer. If the aforementioned methods don’t work, try placing a piece of activated charcoal in the Tupperware, seal the lid, and let it sit for a couple of days. The charcoal can absorb a significant amount of the odor, leaving your Tupperware smell-free. Wash it out after the period has passed.
7. Seal and Freeze Method
For minor residual smells, sealing the Tupperware and placing it in the freezer overnight can often help. The cold can reduce the smell’s potency, making it easier to remove after another wash.
Every Tupperware container is unique, and so is each odor it holds. It may take some trial and error to find the perfect deodorizing method for your nana’s Tupperware. In severe cases, where smells persist, repeat the methods or combine them for more powerful results. With these steps, you should be able to neutralize even the most “crazy bad” odors and keep those family kitchen keepsakes in use for many years to come.