The present invention proposes a device (2) of the odor treatment for an industrial site with the aid of a spraying a liquid solution (4) having a strength of at least one active principle in a carrier fluid, said device comprising means for dilution (6) adapted to obtain a determined rate of dilution of the active substance in the carrier fluid, the pumping means (8) adapted to pump the liquid solution (4), the spray means (12) suitable for spraying the liquid solution (4), the control means (10) adapted to control the dilution means (6), the pumping means (8), and / or the spray means, the liquid solution (4) to the output of the pumping means (8) is at a mean pressure of between 5 and 20 bar, and the spray means are sequentially activated during a first determined duration, and inactive during a second predetermined duration, under the control of the control means.
