Understanding the Cause of a Plastic Smell Upon First Use

Have you ever experienced that unmistakable plastic smell when you unpack a brand new item? You know, the one that hits you as soon as you crack open the packaging? It can be quite puzzling, especially when it lingers long after you’ve taken the item out of its box. In this article, we aim to unravel the mystery behind this curious phenomenon and shed some light on why we often encounter this peculiar plastic scent upon first use. So, if you’ve ever wondered why your new purchases carry that distinct odor, buckle up and join us on this olfactory adventure of understanding the cause of a plastic smell upon first use.

What Causes a Plastic Smell Upon First Use

If you have ever purchased a new plastic item, whether it be a toy, electronic device, or even a kitchen utensil, you may have noticed a distinct plastic smell upon first use. This odor can be quite strong and often lingers for some time. But why does this happen? In this article, we will explore the various factors that contribute to the plastic smell when using a new item, as well as provide tips on how to minimize it and discuss the potential health considerations associated with it.

Chemical Components of Plastic

To understand the cause of the plastic smell, we first need to delve into the chemical components of plastic. Plastic is essentially composed of polymer chains and various additives.

Polymer Chains

Polymer chains are long, repeating units of molecules that make up the backbone of plastic materials. These chains can be composed of different types of polymers, such as polyethylene, polypropylene, or polyvinyl chloride (PVC), among others. Different types of polymers have different properties and are used for different applications.


Additives are substances that are added to plastic during the manufacturing process to enhance certain properties or functionality. These additives can include stabilizers, colorants, flame retardants, and plasticizers, to name a few. While these additives serve important purposes, they can also contribute to the distinct smell of new plastic items.

Plastic Manufacturing Process

The plastic manufacturing process plays a significant role in the development of the plastic smell. There are several methods commonly used in plastic manufacturing, including extrusion, injection molding, blow molding, and thermoforming.


Extrusion is a process by which plastic is melted and forced through a die to create a continuous shape. This method is commonly used for the production of plastic sheets, films, and pipes. The intense heat and pressure involved in the extrusion process can cause the release of volatile compounds, which contribute to the initial smell of the plastic.

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Injection Molding

Injection molding involves injecting molten plastic into a mold cavity, which is then cooled and solidified. This method is widely used for the production of various plastic products, such as bottles, containers, and car parts. Similar to extrusion, the high temperatures and pressure during the injection molding process can result in the release of volatile compounds, leading to the plastic smell.

Blow Molding

Blow molding is a manufacturing process used primarily for the production of hollow plastic objects, such as bottles and containers. It involves inflating a heated plastic form in a mold cavity to achieve the desired shape. The heating and stretching of the plastic material can contribute to the release of volatile compounds, causing the initial plastic smell.


Thermoforming is a process that utilizes heat to soften a plastic sheet and form it into a specific shape. This method is commonly used for packaging, such as clamshells and trays. The heating and shaping of the plastic in thermoforming can also lead to the release of volatile compounds and contribute to the plastic smell.

Role of Plasticizers

Plasticizers play a crucial role in many plastic products and can significantly contribute to the plastic smell. Plasticizers are added to plastic to increase its flexibility and durability. These substances are typically small molecules that can migrate from the plastic into the surrounding environment, especially when the plastic is new or exposed to heat.

Definition and Purpose

Plasticizers are substances that are added to plastic to increase its flexibility, durability, and resistance to wear and tear. They work by reducing the forces between the polymer chains, allowing them to slide more easily over one another. This makes the plastic softer and more pliable, improving its performance and usability for various applications.

Commonly Used Plasticizers

Some commonly used plasticizers include phthalates, adipates, and epoxies. These chemicals are often added to plastics, such as PVC, to make them more flexible and adaptable. However, some plasticizers, particularly certain types of phthalates, have been associated with health concerns, which will be discussed in more detail later in this article.

Presence of Volatile Organic Compounds

Volatile organic compounds, or VOCs, are another factor that contributes to the plastic smell upon first use. VOCs are chemicals that can easily evaporate into the air at room temperature. They are commonly found in many household products, including paint, cleaning agents, and plastics.


VOCs are a category of chemicals that can vaporize at room temperature and become airborne. These compounds can originate from both natural and synthetic sources. When present in plastic, VOCs can contribute to the distinct smell that is often experienced when using new plastic items for the first time.

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Sources of VOCs in Plastic

There are several potential sources of VOCs in plastic. One source is the raw materials used in the production of plastic, including the polymer chains and additives mentioned earlier. These materials can contain residual VOCs that are released during the manufacturing process.

Additionally, some plastic items can contain VOCs as a result of the manufacturing process itself. The high temperatures and pressure involved in plastic manufacturing can cause the release of VOCs from the additives and other components of the plastic.

Health Effects

Exposure to elevated levels of VOCs can have various health effects, depending on the specific compounds and concentrations involved. Short-term exposure to high levels of VOCs may cause eye, nose, and throat irritation, headaches, dizziness, and nausea. Some VOCs may also have longer-term health effects, such as damage to the liver, kidney, or central nervous system. However, it is important to note that the levels of VOCs emitted from new plastic items are typically low and may not pose significant health risks under normal conditions of use.

Factors Affecting the Intensity of the Plastic Smell

Several factors can affect the intensity of the plastic smell experienced when using a new item. These factors include the type of plastic, the plastic thickness, the age of the product, and the storage conditions.

Type of Plastic

Different types of plastic have different properties and, consequently, varying levels of odor. For example, PVC, which is commonly used in plumbing pipes and vinyl flooring, tends to have a stronger smell compared to other plastics. On the other hand, polyethylene, which is often used in food packaging and toys, tends to have a milder smell.

Plastic Thickness

The thickness of the plastic can also influence the intensity of the plastic smell. Thicker plastics may retain more of the odor-causing compounds within the material, resulting in a stronger smell. Conversely, thinner plastics may have a milder odor due to a higher surface-to-volume ratio, allowing for easier release of volatile compounds.

Age of the Product

The age of the plastic product can also impact the intensity of the plastic smell. When a plastic item is freshly manufactured, it is more likely to release odor-causing compounds due to the residual VOCs from the manufacturing process. Over time, these compounds may dissipate or become less detectable, resulting in a decrease in the plastic smell.

Storage Conditions

The way in which a plastic item is stored can also affect the intensity of the plastic smell. If a product is stored in airtight packaging or in a confined space with little air circulation, the odor-causing compounds may become trapped and more concentrated, leading to a stronger smell. However, if a product is stored in an open area with adequate ventilation, the odor may dissipate more quickly.

Tips to Minimize the Plastic Smell

If you find the plastic smell bothersome when using a new item, there are several tips you can follow to minimize its presence.

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Unpacking and Cleaning

When you first receive a new plastic item, it is a good idea to unpack it and allow it to air out before using it. Remove any packaging materials and give the item a thorough cleaning with mild soap and water. This can help to remove any residual VOCs or odor-causing compounds that may have accumulated during the manufacturing and packaging processes.

Air Circulation

Providing adequate air circulation around the plastic item can help to accelerate the dissipation of the plastic smell. Place the item in a well-ventilated area or near a fan to facilitate the exchange of air and reduce the concentration of odor-causing compounds. Opening windows or using an air purifier can also aid in improving air quality and reducing any lingering odors.

Exposure to Sunlight

Exposing the plastic item to sunlight can also help to dissipate the plastic smell. UV rays from the sun can break down the odor-causing compounds, reducing their concentration and ultimately eliminating the smell. If possible, place the item outside under direct sunlight for a period of time, allowing the sun’s rays to naturally deodorize the plastic.

Use of Activated Charcoal

Activated charcoal is known for its ability to absorb odorous compounds. Placing activated charcoal near the plastic item can help to absorb and neutralize the plastic smell. You can either use commercially available charcoal odor absorbers or simply place a bowl of activated charcoal next to the plastic item. Over time, the charcoal will help to eliminate the odor-causing compounds and reduce the plastic smell.

Health Considerations of the Plastic Smell

While the plastic smell may be unpleasant, it is important to note that the levels of VOCs emitted from new plastic items are generally low and not expected to pose significant health risks under normal conditions of use. The health effects of VOC exposure are typically associated with prolonged and high-level exposure, such as in occupational settings or with certain chemicals.

Short-Term Effects

Short-term exposure to the plastic smell may cause minor irritation to the eyes, nose, and throat in sensitive individuals. This is typically a temporary effect and should subside once the odor-causing compounds dissipate. If you experience any significant discomfort or respiratory symptoms, it is advisable to seek fresh air and consult a medical professional if necessary.

Potential Long-Term Health Risks

While the initial plastic smell may not pose significant health risks, it is important to consider potential long-term health effects associated with certain plasticizers, such as certain types of phthalates. These chemicals have been linked to reproductive and developmental disorders in animal studies, and some have been classified as potential endocrine disruptors. However, it is worth noting that exposure levels to phthalates from plastic items are typically very low and may not reach levels of concern. To minimize potential risks, it is advised to choose plastic items that are labeled phthalate-free or opt for alternative materials when possible.


The plastic smell experienced when using a new plastic item is a result of various factors, including the chemical components of plastic, the plastic manufacturing process, the presence of plasticizers and volatile organic compounds, and the specific conditions in which the item is stored and used. While the odor can be bothersome, it is generally not expected to pose significant health risks. By understanding the causes of the plastic smell and following the tips provided, you can help minimize its presence and enjoy your new plastic items with confidence.

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Jenny Jones

About the Author: Jenny Jones

Driven by her desire to share her newfound love for air frying and healthy cooking, Jenny decided to start her own blog. Through her platform, she shares mouthwatering recipes, insightful tips, and step-by-step tutorials, all geared towards helping her readers make healthier choices without compromising taste.