Abstract: An improved apparatus for person to person, rescue breath function transfer for rendering artificial respiration which allows the operator to quickly and easily synchronize his breathing with that of the victim. The apparatus is provided with a flexible flutter valve to enable the operator to sense audibly and visually when the victim is exhaling and the relative amount of air he is exhaling. A by-pass valve enables the victim to inhale fresh air at any time he desires. The present invention may be adapted for rescue air sharing, booster breathing, and resuscitation in a toxic environment. A connector is provided for the quick connection of an air or oxygen tank to the fresh air inlet port. The apparatus of the present invention is designed to be lightweight, economical to fabricate, portable, and easy to clean or repair. A modified form of the present invention can be used for the artificial respiration of animals.