Abstract: The invention concerns a volume generator (1) of chaotic electrostatic field (E), locally amplified, to subject a fluid (U) loaded with aerosol parties (P, p) to the action of an electrostatic field (E) highly variable in amplitude and orientation locally. This generator (1) includes: an induced electrostatic module (2), consisting of a porous dielectric material (md), two porous electrodes with electrostatic induction (4, 5), an electrical current source (6), and a device for boosting the fluid. The electrostatic module (2) consists of a three-dimensional grid system (Rxyz) having at least locally three-dimensional periodicity (or pseudo-periodicity) in at least three directions. Each grid of the system consists of an externally convex and internally concave elementary cell recessed in its center for including a compact elementary empty cellular volume (V1), that is with transverse dimensions (dx1, dy1, dz1) of the same order of magnitude in the three directions.