Abstract: A disposable toilet bowl deodorizing includes a housing containing a fan and a deodorizing air filter. The device includes a mounting mechanism that attaches onto the rim of the toilet bowl with the device positioned on the inside of the toilet bowl. A sensor detects presence of a person on the toilet seat and activates a blower or fan which draws air from inside the toilet bowl through one side of the unit, through the deodorizing air filter, out an exhaust side of the unit and back into the toilet bowl. The device operates at least during the time a person is present on the seat and for a period of time after the person leaves the seat.