Cleaning machine comprising a nebuliser device for nebulising a liquid product, a tank which contains said liquid product, an intake part which comprises at least one vent for waste air, wherein said nebuliser device comprises a dispenser for dispensing said liquid product, a first connecting duct which connects in fluid communication said tank with said dispenser, a second duct which connects in air-flow communication said at least one waste air vent of said intake part with said dispenser, wherein said dispenser comprises a hollow body comprising an inner cavity connected in air-flow communication with said second duct, a dispensing tube connected in fluid communication with said first duct, wherein a space forming a nebulisation area is provided arranged at a mouth of an outlet pass-through opening of said dispensing tube and at a mouth of an outlet pass-through opening of said inner cavity, characterized in that said machine comprises a dirt container and wherein said intake part comprises at least one motor adapted to intake air from said dirt container, said at least one motor being housed inside a container of said intake part, wherein said container comprises at least one inlet pass-through opening for passing air from said dirt container to said at least one motor and at least one outlet pass-through opening, wherein said at least one outlet pass-through opening is said at least one waste air vent, wherein said container comprises a pass-through vent hole of smaller size with respect to said outlet pass-through opening, wherein said pass-through vent hole opens the container to the outside. a nebuliser device for nebulising a liquid product, a tank which contains said liquid product, an intake part which comprises at least one vent for waste air, wherein said nebuliser device comprises a dispenser for dispensing said liquid product, a first connecting duct which connects in fluid communication said tank with said dispenser, a second duct which connects in air-flow communication said at least one waste air vent of said intake part with said dispenser, wherein said dispenser comprises a hollow body comprising an inner cavity connected in air-flow communication with said second duct, a dispensing tube connected in fluid communication with said first duct, wherein a space forming a nebulisation area is provided arranged at a mouth of an outlet pass-through opening of said dispensing tube and at a mouth of an outlet pass-through opening of said inner cavity, characterized in that said machine comprises a dirt container and wherein said intake part comprises at least one motor adapted to intake air from said dirt container, said at least one motor being housed inside a container of said intake part, wherein said container comprises at least one inlet pass-through opening for passing air from said dirt container to said at least one motor and at least one outlet pass-through opening, wherein said at least one outlet pass-through opening is said at least one waste air vent, wherein said container comprises a pass-through vent hole of smaller size with respect to said outlet pass-through opening, wherein said pass-through vent hole opens the container to the outside.