Air freshener spray: how to choose the right one to neutralize odors

An air freshener scents the air in a few seconds, but it doesn't always solve the origin of an odor. For a more lasting result, you must first identify the source, ventilate, then choose a suitable solution. If you enjoy making your own products, you can also consult our homemade natural air freshener to understand the basics of a simple preparation.

In France, scented products are used in many homes, but their use requires some precautions. A study by ADEME notably points out that emissions vary depending on the products and that the liquid composition is not always enough to predict what will be released into indoor air.

What is an air freshener actually for?

An air freshener is a scented product designed to diffuse a fragrance into a room. You typically use it by spraying, on an occasional basis, to refresh an atmosphere, create an ambiance, or mitigate an unpleasant odor.

Its action is quick because the odorous molecules disperse immediately into the air. This speed is its main advantage compared to a passive diffuser, a candle, or a reed diffuser, whose diffusion builds up more gradually.

However, scenting a room does not necessarily mean eliminating the source of the problem. A smell of garbage, stale tobacco, or dampness can return as soon as the fragrance fades. You must therefore distinguish three functions:

A product can combine several of these functions, but you should not confuse them. If the odor comes from a leak, mold, or impregnated textiles, the spray will never replace the necessary cleaning, repair, or ventilation.

Why do bad odors return?

Imagine a kitchen after preparing a fried dish. Even after putting away the utensils, odorous compounds can remain in the air, curtains, carpets, or upholstery.

Bad odors often have several origins. Cooking, waste, plumbing, tobacco, animals, and humidity are among the most common causes in a home. Some odors are also linked to invisible accumulation in textiles or insufficient ventilation.

The first step is therefore to trace the source. You can check the following points:

Once the cause is addressed, you can use an air freshener to improve olfactory comfort. This method avoids layering a fragrance over a persistent odor, which sometimes gives a heavier impression instead of a feeling of freshness.

How to distinguish between masking and neutralizing an odor?

Neutralization at the source does not mean that all odors instantly disappear. It refers to an approach that seeks to reduce the perception of odorous molecules, instead of just adding a new fragrance on top.

This nuance is important when comparing a scented spray, a classic air freshener, or an essential oil-based solution. Look at the manufacturer's indications, the composition, the advertised mode of action, and the precautions for use. Be wary of vague promises like "purifies the air" or "sanitizes the home" when they are not explained.

A publication in April 2026 studied air fresheners among 40 people surveyed in August 2025. In this small sample, 90% reported being exposed to indoor sprays or diffusers, and 69% reported experiencing adverse effects after use or exposure. This descriptive study does not allow extrapolating the results to the entire population, but it highlights the importance of measured use.

If you are looking for a more targeted approach against everyday odors, you can consult our natural homemade air freshener. The goal is to address olfactory comfort without transforming every room into a strongly scented space.

Which spray to choose depending on the room and the odor?

In an entrance, you will generally seek a clean and light feeling. In a kitchen, you will need more occasional use after ventilation and cleaning. In a bedroom, a discreet fragrance will be preferable, especially if the room is small or poorly ventilated.

The choice must therefore depend on four criteria:

The spray is especially suitable when you want immediate and localized action. You can use it before guests arrive, after cooking, or when you want to refresh a bathroom. For a permanent odor, you should rather look for the cause and consider a more regular solution, while maintaining good ventilation.

On the French market, you will also find formulas intended for laundry, surfaces, or ambient air. Do not automatically interchange them. Always read the label to check authorized uses, compatible surfaces, and specific precautions.

How to use a spray without degrading indoor air?

In a closed dwelling, the quantity used and ventilation play an essential role. Avoid repeated spraying to compensate for a recurring odor. It is preferable to address the cause, ventilate, then use a reasonable quantity according to the product's instructions.

A French study published in 2022 analyzed 15 products, including four sprays, six passive diffusers, and five active diffusers. The researchers did not identify a worrying situation for chronic exposure in their average use scenario. However, some worst-case scenarios could exceed reference values for several compounds, particularly with highly emissive products.

These results do not mean that all sprays have the same profile. Rather, they show that formulations, doses, room size, and frequency of use significantly change exposure. To limit risks, apply the following steps:

Public French data on indoor air quality monitors pollutants such as formaldehyde, benzene, and carbon dioxide in certain public establishments. This monitoring mainly concerns regulated buildings, but it serves as a reminder that indoor air deserves special attention.

Are essential oils always suitable for a spray?

An Anses report on essential oil-based sprays and diffusers for domestic use specifically examines emissions into indoor air after use. It serves as a useful reminder: the product's form and diffusion method are as important as the natural or synthetic origin of its ingredients.

Dry diffusion can meet certain expectations when you want to avoid water spraying, a flame, or an electrical appliance. Our room diffuser relies on natural wool felt and a synergy of 52 essential oils. It is refillable and designed to diffuse without electricity, gas, or combustion, but you must still follow the usage instructions.

What to do when a spray is not enough?

If the odor returns quickly, do not increase the number of sprays. First, look for what is causing it. A damp smell can indicate insufficient ventilation, infiltration, or mold. An animal odor can linger in textiles. A kitchen odor can come from filters, seals, or greasy surfaces.

You can then choose a solution adapted to the duration of the need: