AC Vent Smells Like Sewage? (Possible Causes & Fixes)

Why Your Furnace Smells When You Turn It On for the First Time This Fall When you first turn on your furnace after months of sitting idle, it’s common to notice a burning smell. This is usually nothing to worry about. During the warmer months, dust and debris collect on the heat exchanger and other parts of your furnace. When the system heats up for the first time, that dust burns off, creating a temporary odor. The smell should disappear within a few hours. If it lingers, or if it smells smoky

Propane Smell From RV Furnace: Is It Normal? (Helpful Guide)