Fire in Gironde: How Can You Assess the Level of Smoke Pollution in Your Home Caused by Forest Fires?

The massive fire in Gironde will be remembered as an unprecedented wildfire. So vast that the immense plumes of smoke were directly visible from satellites, this event left a deep mark on the region. While the flames ravaged thousands of hectares, the toxic smoke spread over vast distances, affecting numerous homes throughout the department. Even after calm has returned, the impact of this fire in Gironde does not end at the doorsteps of homes: homes contaminated by smoke may retain invisible but very real chemical pollution.

PAHs: Toxic and Carcinogenic Combustion Byproducts

During a wildfire, the incomplete combustion of biomass (trees, vegetation, soil) releases a wide range of heavy air pollutants. Among these, polycyclic aromatic hydrocarbons (PAHs) pose the most serious threat to residents.

What are PAHs?

Polycyclic aromatic hydrocarbons are a family of chemical compounds produced by the incomplete combustion of organic matter. They tend to adhere to microparticles and soot deposited in homes.

What are their effects on health?

Exposure to PAHs is not harmless and poses major risks to the body:

Carcinogenic and mutagenic properties: Many PAHs, such as benzo[a]pyrene (CAS 50-32-8), are classified as known or possible carcinogens by the International Agency for Research on Cancer (IARC).

Respiratory and skin toxicity: Inhalation of dust containing PAHs causes chronic irritation of the respiratory tract, exacerbates asthma, and can cause contact dermatitis.

Effects on the immune and reproductive systems: Prolonged exposure promotes systemic inflammation and disrupts the endocrine system.

A particularly persistent level of contamination in homes

Contrary to popular belief, opening windows to "air out" a home after a disaster or the passage of a smoke cloud is not enough to clean the air inside. In fact, during the fire in Gironde, smoke seeped into every nook and cranny of the buildings.

PAHs do not remain suspended in the air indefinitely in gaseous form: they settle and become permanently deposited on surfaces as dust and fine soot. They thus permeate:

• Rugs, carpets, and upholstery fabrics.
• Bedding and sofas.
• Ventilation and heating systems.
• The floors, furniture, and walls in all living areas.

Without an accurate diagnosis and targeted cleaning, this indoor air pollution persists over time. Everyday activities—such as walking on the floor, sweeping, or using a conventional vacuum cleaner—continuously stir up this toxic dust, exposing occupants to constant inhalation.

Why is it essential to measure indoor pollution?

After an event of this magnitude, measuring pollution levels is an essential step in objectively assessing whether indoor air poses a health risk to occupants. The smell of burning may sometimes fade even while PAH concentrations remain abnormally high on surfaces and in dust.

Having your home inspected allows you to:

• To confirm or rule out the presence of toxic residues from the smoke of the fire in Gironde.
• Accurately quantify the level of health risk, particularly for children who play on the ground and put their hands in their mouths.
• Adapt sanitation measures and verify the effectiveness of the cleaning efforts.

The Scan4Toxic Solution: A Simple Test Kit for Reliable Results

To address this top public health priority following the fire in Gironde, Scan4Toxic has developed a specialized solution that is accessible to everyone.

The Scan4Dust System

The assessment of PAH contamination is based on the analysis of dust collected in your home. The kit includes the patented Scan4Dust device, specifically designed to easily collect household dust using a standard vacuum cleaner.

The analysis process:

Very simple sampling: Collect a dust sample from the main living areas by following the instructions provided.

Shipping to the lab: Please return the collected sample using the secure return envelope.

High-Precision Analysis: Scan4Toxic’s experts analyze dust samples using mass spectrometry to accurately quantify the various PAHs present.

Fast and reliable results: You’ll receive a comprehensive analysis report featuring a detailed and personalized interpretation of the data.

With the Scan4Toxic assessment, you’ll get a clear picture of the safety of your home following a fire in Gironde, allowing you to make the right decisions to protect your family’s health.