How to Get Smells Out of Plastic Containers: And Why Your Leftovers Might Be Plotting Against You

Plastic containers are a staple in modern kitchens, offering convenience and versatility for storing leftovers, meal prepping, and organizing pantry items. However, one common issue many people face is the lingering smell that seems to cling to these containers, no matter how many times they’re washed. Whether it’s the pungent aroma of last night’s garlicky pasta or the stubborn scent of curry, these odors can be frustrating to eliminate. But fear not—this guide will walk you through a variety of methods to banish those smells for good. And who knows? Maybe your leftovers aren’t just smelly—they might be conspiring to take over your fridge.

Why Do Plastic Containers Hold Onto Smells?

Before diving into solutions, it’s important to understand why plastic containers are so prone to retaining odors. Unlike glass or stainless steel, plastic is a porous material. Over time, microscopic pores in the plastic can trap food particles and oils, which then release odors. Additionally, certain foods—like onions, fish, and spices—contain volatile compounds that easily bond with plastic, making the smells harder to remove.

Effective Methods to Remove Smells from Plastic Containers

1. Baking Soda: The Odor-Absorbing Powerhouse

Baking soda is a natural deodorizer and one of the most effective ways to eliminate smells from plastic containers. Here’s how to use it:

Fill the container with warm water and add 1-2 tablespoons of baking soda.
Let it soak overnight, then wash with soap and water.
For stubborn smells, create a paste with baking soda and water, scrub the interior, and rinse thoroughly.

2. Vinegar: The Acidic Smell Neutralizer

White vinegar is another household staple that can tackle tough odors. Its acidic properties help break down odor-causing compounds.

Mix equal parts water and vinegar in the container.
Let it sit for a few hours or overnight.
Rinse thoroughly with soap and water to remove any vinegar smell.

3. Lemon Juice: Freshness in a Citrus Squeeze

Lemon juice not only removes odors but also leaves a fresh, citrusy scent behind.

Squeeze the juice of one lemon into the container.
Add warm water and let it soak for a few hours.
Scrub and rinse well.

4. Activated Charcoal: The Odor Magnet

Activated charcoal is highly porous and excellent at absorbing odors.

Place a piece of activated charcoal inside the container and seal it.
Leave it for 24-48 hours to absorb the smell.
Wash the container as usual.

5. Sunlight: Nature’s Disinfectant

UV rays from sunlight can help break down odor-causing compounds and kill bacteria.

Wash the container with soap and water.
Place it in direct sunlight for several hours.
Bring it back inside and rinse if necessary.

6. Coffee Grounds: Aromatic and Absorbent

Used coffee grounds can absorb odors and leave a pleasant coffee scent.

Fill the container with dry coffee grounds.
Seal it and let it sit overnight.
Discard the grounds and wash the container.

7. Dishwasher Detergent: Deep Cleaning Power

For a more thorough clean, use dishwasher detergent, which is designed to break down grease and food particles.

Add a small amount of dishwasher detergent to the container.
Fill it with hot water and let it soak for a few hours.
Scrub and rinse well.

8. Freezing: Locking Away Odors

Freezing can neutralize odors by solidifying odor-causing compounds.

Wash the container with soap and water.
Place it in the freezer for a few hours.
Thaw and rinse before use.

Preventing Future Odors

While these methods are effective, prevention is always better than cure. Here are some tips to keep your plastic containers smelling fresh:

Avoid storing strong-smelling foods for long periods. If you must, use glass containers instead.
Wash containers immediately after use. Don’t let food residues sit and seep into the plastic.
Use liners or parchment paper. This creates a barrier between the food and the container.
Choose high-quality, odor-resistant plastics. Not all plastics are created equal—opt for BPA-free, food-grade containers.

FAQs

Q1: Can I use bleach to remove smells from plastic containers?
A: While bleach can disinfect and remove odors, it’s not recommended for plastic containers as it can degrade the material and leave behind a chemical smell. Stick to gentler methods like baking soda or vinegar.

Q2: Why does my plastic container still smell after washing?
A: If the smell persists, it’s likely because the odor-causing compounds have deeply penetrated the plastic. Try a longer soak with baking soda or vinegar, or use activated charcoal for a more intensive treatment.

Q3: Are there any foods I should never store in plastic containers?
A: Avoid storing highly acidic foods (like tomato sauce) or strongly aromatic foods (like curry or fish) in plastic containers for extended periods. These are more likely to cause lingering smells.

Q4: Can I use essential oils to mask odors in plastic containers?
A: While essential oils can add a pleasant scent, they won’t eliminate the underlying odor. Use them in conjunction with odor-removal methods for best results.

Q5: How often should I deep-clean my plastic containers?
A: Aim to deep-clean your containers every few weeks, especially if you frequently store strong-smelling foods. Regular maintenance will help keep odors at bay.