A portable nasal irrigator, comprising: (a) a main canister with a reservoir for holding fluid, the canister comprising at least one air exit port, wherein the air exit port extends beyond a rim of the canister; and (b) an insert with a base that fits within the canister, wherein the insert comprises at least one fluid channel that fits over the air exit port, and further wherein the fluid channel is larger in diameter than the air exit port, thereby providing a small space between the outer surface of the air exit port and the inner surface of the fluid channel, wherein the insert comprises an extension protruding outwardly to the canister, wherein the fluid channel comprises a groove extending vertically along the exterior of the fluid channel to an aperture in the extension, said aperture creating a channel to the canister; and (c) a pressurized air supply source contiguously attached without tubing to the canister for introducing pressurized air through the air exit port such that the fluid is expelled as a mist through an exit hole in the fluid channel; a battery contained within the pressurized air supply source; and a filter for filtering incoming air, characterized in that said pressurized air supply source comprises therein an airflow regulating system comprising: an air outlet comprising an air outlet elbow connected to an air inlet of the main canister and circumventing a motor within the pressurized air supply source to connect to a pump; the filter comprising an air inlet manifold connected to the pump; and a circuit board to control the motor; the pump in communication with the main canister and the motor, and the filter connecting to the pump; the motor is driven by the battery; the motor is arranged below and adjacent the air outlet elbow, the pump is arranged below and adjacent the motor, and the battery is arranged below and adjacent the pump; and an outlet tubing connects the air outlet elbow to the pump circumventing the motor. (a) a main canister with a reservoir for holding fluid, the canister comprising at least one air exit port, wherein the air exit port extends beyond a rim of the canister; and (b) an insert with a base that fits within the canister, wherein the insert comprises at least one fluid channel that fits over the air exit port, and further wherein the fluid channel is larger in diameter than the air exit port, thereby providing a small space between the outer surface of the air exit port and the inner surface of the fluid channel, wherein the insert comprises an extension protruding outwardly to the canister, wherein the fluid channel comprises a groove extending vertically along the exterior of the fluid channel to an aperture in the extension, said aperture creating a channel to the canister; and (c) a pressurized air supply source contiguously attached without tubing to the canister for introducing pressurized air through the air exit port such that the fluid is expelled as a mist through an exit hole in the fluid channel; a battery contained within the pressurized air supply source; and a filter for filtering incoming air, characterized in that said pressurized air supply source comprises therein an airflow regulating system comprising: an air outlet comprising an air outlet elbow connected to an air inlet of the main canister and circumventing a motor within the pressurized air supply source to connect to a pump; the filter comprising an air inlet manifold connected to the pump; and a circuit board to control the motor; the pump in communication with the main canister and the motor, and the filter connecting to the pump; the motor is driven by the battery; the motor is arranged below and adjacent the air outlet elbow, the pump is arranged below and adjacent the motor, and the battery is arranged below and adjacent the pump; and an outlet tubing connects the air outlet elbow to the pump circumventing the motor. an air outlet comprising an air outlet elbow connected to an air inlet of the main canister and circumventing a motor within the pressurized air supply source to connect to a pump; the filter comprising an air inlet manifold connected to the pump; and a circuit board to control the motor; the pump in communication with the main canister and the motor, and the filter connecting to the pump; the motor is driven by the battery; the motor is arranged below and adjacent the air outlet elbow, the pump is arranged below and adjacent the motor, and the battery is arranged below and adjacent the pump; and an outlet tubing connects the air outlet elbow to the pump circumventing the motor.