Abstract: A system for venting noxious fumes from a toilet. A toilet seat weight-sensing switch operatively connects to a fan and activates when the seat of the toilet is sat upon. A toilet flush handle switch activates when the flush handle of the toilet activates. A timer circuit activates when the toilet flush handle switch is activated. A logic gate operatively connects to the toilet seat weight-sensing switch, the timer circuit, and the fan. When the seat of the toilet is sat upon, the toilet seat weight-sensing switch generates a pulse turning on the logic gate which generates a pulse which turns on the fan. When the flush handle of the toilet activates, the toilet flush handle switch generates a pulse turning on the timer circuit which after a predetermined time generates a pulse which turns off the logic gate which turns off the fan.