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.
Poor Ventilation. If you have poor ventilation, it could be the cause of mildew stench. The moisture is trapped and is building up on your walls and inside your ducts, causing mold and mildew to form. To fix the problem, install proper ventilation---such as a fan or window---in the areas where moisture may be occurring.f you know poor ventilation is not the cause of your mildew smell, start checking for excess moisture throughout your home. Excess moisture, not caused by poor ventilation, is typically found in places where leaks occur, such as on your roof, in your basement or under your sink.