Under some circumstances, you may not smell a propane leak, but propane gas detectors are designed to sound an alarm if they sense the presence of propane. Their operation does not depend on the concentration of odorant in the air, just the propane concentration at the detector.
We recommend that you consider installing one or more propane gas detectors. That’s especially important if you or others in your home have difficulty smelling propane, or if appliances are in little-used areas in your home where the smell of propane might not be detected. Detectors can provide an additional measure of security.
Remember: detector quality is important. Be sure the units you buy are listed by Underwriters Laboratories (UL). To be sure propane gas detectors operate properly, install and maintain them as the manufacturer recommends.
Finally, trust your nose. Never ignore the smell of propane, even if no detector is sounding an alarm to signal its presence. However, if a detector is sounding an alarm, treat it as an emergency and act immediately, even if you do not smell the propane.