There are eight different genera in the family classified as rabbits, including the European rabbit (Oryctolagus cuniculus), cottontail rabbits (genus Sylvilagus; 13 species), and the Amami rabbit (Pentalagus furnessi, an endangered species on Amami Åshima, Japan).
What is that terrible musty/mold smell coming from my air vents? There have been numerous complaints of a bad musty/mold smell coming from the air conditioning vents. This usually occurs after the A/C has been running or after the truck has been sitting.
If you smell mold or mildew there's probably mold in the building. Most people correctly identify moldy or musty smells as mold. Some folks call these odors mildew-odor but since mildew grows only on living plants, it's more accurate to call these indoor odors and growths mold. Not all mold makes moldy smells.