Are Mothballs Toxic to Breathe? Understanding the Dangers

Mothball fumes are highly toxic to breathe and pose significant health risks to humans. These fumes, which come from chemicals like naphthalene, can cause immediate symptoms such as headaches, nausea, dizziness, and respiratory irritation. Long-term exposure to these chemicals is even more dangerous, potentially leading to serious conditions like liver and kidney damage, respiratory issues, and an increased risk of cancer.

Vulnerable groups, such as children, pregnant women, the elderly, and people with respiratory conditions, are particularly at risk. To protect your health, it’s essential to understand the dangers of mothball fumes and consider safer, non-toxic alternatives for pest control.

What are mothballs made of?

Mothballs contain strong pesticides, typically made from either naphthalene or paradichlorobenzene. These chemicals are used because they effectively kill moths and other pests, particularly the larvae that can damage wool, cashmere, and other delicate fabrics. The problem lies in the fact that mothballs don’t just sit passively in your drawers or closets. Instead, they release fumes that evaporate into the air, forming a gas that is inhaled by humans and animals alike.

How do mothball fumes affect indoor air quality?

When mothballs are placed in closets, storage boxes, or drawers, they begin to release their toxic chemicals into the air. These chemicals linger, especially in poorly ventilated spaces, reducing the overall air quality in your home. Even after mothballs have dissolved, their residue can persist for a long time, continuing to pollute the air you breathe.

Indoor air quality is already a concern in many households due to factors like dust, mold, and synthetic materials. Adding mothball fumes to the equation increases the levels of toxins in your living space.

People who are consistently exposed to these fumes, especially in closed-off areas where air cannot circulate, may find themselves breathing in more harmful chemicals than they realize. This is particularly concerning for individuals with respiratory issues like asthma or allergies.

Short-term health effects of breathing mothball fumes

Breathing in mothball fumes, even for short periods, can lead to a variety of uncomfortable symptoms. In some cases, even brief exposure to these toxic vapors can result in immediate reactions, especially in those who are sensitive to chemicals. The most common short-term health effects include:

• Headaches: Mothball fumes can quickly lead to headaches due to their strong chemical odor.
• Nausea and vomiting: The smell of mothballs is often overpowering, causing nausea in individuals who are exposed to it for too long.
• Dizziness or lightheadedness: Prolonged exposure can result in dizziness, as the body reacts to the toxins being inhaled.
• Eye, nose, and throat irritation: The vapors from mothballs can irritate mucous membranes, leading to sore throats, watery eyes, and a burning sensation in the nose.

Long-term exposure risks to mothball fumes

While the short-term effects of mothball fumes can be unpleasant, the real danger lies in prolonged exposure. Over time, breathing in naphthalene or paradichlorobenzene can lead to more serious health problems that affect various systems of the body.

• Liver and kidney damage: The chemicals in mothballs are processed through the liver and kidneys, and overexposure can lead to organ damage, especially in people who are vulnerable to toxic substances.
• Respiratory issues: Long-term exposure to mothball fumes can exacerbate respiratory conditions such as asthma, chronic bronchitis, or other lung diseases. Repeated inhalation of toxic fumes damages the respiratory system, reducing lung function over time.
• Carcinogenic risks: Naphthalene, one of the main components in mothballs, has been classified as a possible carcinogen. Long-term exposure can increase the risk of developing certain types of cancer, particularly in the respiratory tract.
• Neurological damage: Chronic exposure to paradichlorobenzene, another common mothball chemical, has been linked to nervous system damage, leading to symptoms like confusion, tremors, and memory loss.

Are certain people more vulnerable to mothball toxicity?

While mothball fumes are harmful to everyone, certain individuals are particularly vulnerable to their toxic effects. Understanding who is most at risk can help you take appropriate precautions. People who may be more susceptible include:

• Children: Children are especially sensitive to toxins because their bodies are still developing. Inhaling mothball fumes can lead to poisoning more quickly in children than in adults, as their smaller bodies process chemicals differently.
• Pregnant women: Exposure to naphthalene and paradichlorobenzene during pregnancy has been associated with developmental issues in fetuses. Pregnant women should avoid mothball fumes to minimize risks to their unborn children.
• Elderly individuals: Older adults often have weakened immune systems and may already suffer from chronic health conditions. This makes them more vulnerable to the toxic effects of mothball fumes, which can exacerbate pre-existing illnesses.
• People with respiratory conditions: Those with asthma, COPD, or other lung diseases are particularly at risk when exposed to mothball fumes. The chemicals can worsen respiratory symptoms and make breathing difficult.

Understanding these vulnerabilities is crucial for households that use mothballs, especially if children, elderly individuals, or pets are present. For pet owners, it’s also worth noting that mothballs are toxic to animals, particularly dogs and cats. For a closer look at the dangers of mothball fumes to pets, you can read this comprehensive post on whether mothball fumes are dangerous to dogs and cats.

Signs and symptoms of mothball poisoning

Recognizing the symptoms of mothball poisoning is critical for taking swift action. Whether caused by inhaling fumes or ingesting mothballs (a more common risk for pets and children), poisoning can occur rapidly.

Some of the most common symptoms of mothball poisoning include:

• Difficulty breathing: Inhaling mothball fumes can lead to respiratory distress, particularly in people with underlying conditions like asthma.
• Nausea and vomiting: Naphthalene and paradichlorobenzene can irritate the stomach and cause digestive upset.
• Dizziness and confusion: High levels of exposure can affect the nervous system, leading to feelings of confusion or disorientation.
• Liver and kidney dysfunction: In severe cases, mothball poisoning can result in liver or kidney damage, particularly in those exposed over long periods.
• Jaundice: Naphthalene poisoning can lead to hemolytic anemia, a condition that causes the destruction of red blood cells, leading to jaundice (yellowing of the skin and eyes).

How to safely handle and dispose of mothballs

If you currently use mothballs, it’s important to handle them with care to minimize the risk of exposure to fumes.

Here are some key safety tips for managing mothballs:

• Use in well-ventilated areas: If you must use mothballs, place them in areas with good ventilation, ensuring that fumes can dissipate rather than concentrate.
• Wear gloves: When handling mothballs, wear gloves to avoid direct skin contact with the chemicals.
• Seal mothballs in airtight containers: Instead of placing mothballs directly into drawers or closets, store them in airtight containers to prevent fumes from leaking into the air.
• Dispose of mothballs properly: Never throw mothballs in the trash or flush them down the drain. Mothballs are considered hazardous waste, and they should be disposed of at a facility that handles toxic materials.

Naphthalene vs paradichlorobenzene: which is worse?

Most mothballs contain one of two chemicals, and the label tells you which.

• Naphthalene is the more acutely toxic of the two. It can destroy red blood cells (hemolytic anemia), and newborns and people with G6PD deficiency, a common inherited condition, are especially at risk. The International Agency for Research on Cancer classes it as possibly carcinogenic to humans.
• Paradichlorobenzene is less acutely poisonous, but long-term breathing of its vapor has been linked to effects on the liver, kidneys and lungs, and it carries the same "possibly carcinogenic" classification. It is also used in some toilet deodorizer blocks.

Both turn straight from solid to gas, which is how they work and why the fumes build up in closed rooms. Neither is something to breathe while you sleep.

Are mothballs banned?

In the European Union, naphthalene and paradichlorobenzene are no longer approved as moth repellents, so traditional mothballs have gone from the shelves there. In the US they are legal but regulated as pesticides by the EPA: the label requires using them only in airtight containers with the clothing, and using them any other way, such as loose in an attic or outdoors to repel animals, breaks federal law. California lists both chemicals under Proposition 65 as known to cause cancer.

Safe and non-toxic alternatives to mothballs

Given the serious risks associated with mothball fumes, it’s wise to consider safer, non-toxic alternatives. Thankfully, there are plenty of natural solutions for keeping moths away from your clothes and fabrics.

• Cedarwood: Cedar naturally repels moths and other pests, making it an excellent alternative to mothballs. Cedar blocks, cedar sachets, or cedar rings can be placed in closets and drawers to protect your clothes.
• Lavender: Moths dislike the scent of lavender. Placing lavender sachets or dried lavender in storage areas can effectively repel moths.
• Cloves and rosemary: Like lavender, these herbs are natural moth repellents. You can create sachets filled with these herbs and place them in closets to keep moths at bay.
• Essential oils: Certain essential oils, such as peppermint, eucalyptus, and lemon, can deter moths. Adding a few drops to cotton balls and placing them in storage spaces is an easy way to keep moths away.

For more detailed guidance on how to protect your wool and other delicate fabrics from moth infestations, consider reading this guide to preventing moth damage in wool.

Steps to improve air quality after mothball exposure

If you’ve used mothballs in the past and are concerned about lingering fumes in your home, there are steps you can take to improve indoor air quality:

• Ventilation: Open windows and doors to allow fresh air to circulate through your home. Using fans can help speed up the process of clearing out lingering fumes.
• Air purifiers: Investing in an air purifier with a HEPA filter can help remove toxins and improve the overall air quality in your home.
• Clean affected areas: Thoroughly clean areas where mothballs were used to remove any residue. This includes wiping down surfaces with a vinegar solution to neutralize odors and toxins.

By taking these steps, you can reduce the harmful effects of mothball fumes and create a healthier living environment for yourself and your family.

Mothball fumes are undeniably toxic, posing serious health risks to both humans and animals. From short-term discomfort to long-term organ damage and even carcinogenic risks, the dangers of breathing in mothball fumes should not be taken lightly.

However, with the wide variety of natural, non-toxic alternatives available, there’s no need to rely on these harmful chemicals to protect your fabrics. By switching to safer methods like cedar, lavender sachets, and other herbal repellents, you can keep moths away while safeguarding your health and indoor air quality.