You can feel the bad odor comping from the air vents of your house or office. In some cases, the smell is persistent. In other cases, it comes and goes and its intensity changes over time. Even though the symptoms may vary, they are a sign of a serious problem which must be identified and dealt with quickly.
If there is musty smell in the rooms and it does not go away no matter how often you open the windows or use an air spray, then you are most certainly dealing with mold or mildew inside the air vents. Both of these are types of fungus. They can have a variety of colors from white, pink, yellow and green to black. They can be damaging to surfaces and pose serious health hazards.
Mold and mildew usually appear in the air vents of buildings in warm and humid climates. However, they can also grow due to structural issues. When there is no proper insulation, for instance, the colder air easily gets into contact with the warmer surface and condensation appears. When moisture is present, fungus is quick to follow.
In order for the issue to be resolved, the air vents must be properly cleaned. Special chemicals, which are deadly for mold and mildew, but safe for people and animals, have to be used. The cause of moisture must be eliminated as well.
When there is bad odor coming from the air vents, you must take the necessary steps to deal with the problem without delay.