A fluid management device comprising an air filler assembly comprising a filter, a body, a mouthpiece and a flap valve, and a fluid deflector situated between the filter and the mouthpiece. The body comprises condensation collection guide channels located on an inside surface of the body behind the fluid deflector that direct condensation and saliva into a collection basin located behind the fluid deflector at a base of the fluid deflector. The first end of the flap valve is attached to the body, and the second end of the flap valve is situated directly beneath the collection basin. When the flap valve is in an open position, fluids collected in the collection basin escape from the device by dripping out of it.