Michael Ackerman, a Seattle Realtor with Coldwell Banker Bain, blogs about the importance of having working carbon monoxide detectors in your home. Carbon monoxide is odorless and is usually present in a home when there is a problem with the gas furnace. You will not be able to detect if there is an unsafe level of carbon monoxide in your home without a working detector. If you have any questions or comments, please send an email to michaelackerman@cbbain.com or visit www.mackerman.com.