How do I get rid of the onion smell in Tupperware?

Here are a couple of ideas:

Try putting baking soda in the container and then, add a slightly damp paper towel. Put the lid on and let it sit for a few days. The paper towel will somehow absorb the odor. Wash once this process is completed and the container should be good as new.

Heat lemon juice in the microwave, rub it on the Tupperware and let it set a little bit. It will make it lemony fresh again.

Vinegar has typically worked for me, but no matter, see if these help.

https://homequicks.com/ways-to-remove-odor-from-plastic-containers

https://food52.com/blog/11488-how-to-get-smells-and-stains-out-of-tupperware

https://www.hunker.com/12492547/how-to-remove-an-onion-odor-on-plastic

I went to glass storage containers just for this reason. Everything I cook has onions or garlic in it! 🌞

Thank you ladies.

@ Naomie , i always use glass containers but with Thanksgiving leftovers i had to use my plastic one.

Anyway, thank you ladies will definitely try these tips.

There's a product in the automatic dishwasher soap section of the grocery store that is designed to remove stains from plastic containers. This also removes odors. It can be used in the dishwasher or when handwashing.

Thank you Laura Cooper