A system for detection and monitoring of body exudates includes an absorbent article and at least one gas emitting substance incorporated within the absorbent article that can emit a gas after a liquid insult. After an insult, a device incorporating at least one gas sensitive composition can detect the gas and signal that an insult has occurred. The gas may also be detected by a non-contact gas sensor linked to a controller and signaling device which can send visual, auditory, and/or vibratory alerts. The alerts may be perceptible in an area outside the wearer's clothing or at a remote location, such as a watch, radio, computer device and/or smart phone. The system can also determine the fullness of an absorbent article and monitor dry time. The system can be used for interactive toilet training or for caring for an infant, a disabled person, an incontinent youth, or an elderly person.