A person support apparatus includes a support adapted to support thereon an occupant of the person support apparatus and a sensor configured to detect an ambient air characteristic. The sensor generates an output signal based on the detected characteristic and communicates the output signal to a controller. The controller is configured to receive the output signal from the sensor and determine a usability status of the person support apparatus. The usability status may include an indication that the person support apparatus is ready for use by an occupant, whether a potential hazard exists for an occupant of the person support apparatus, a cleaning status of the person support apparatus, or a location of the person support apparatus.
