Mold is everywhere, literally, everywhere… Every time you exit your residence, you are exposed to it. Mold is a fungus that spreads by releasing spores into the environment and then the wind disperses the little buggers where they can readily be sucked into an A.C. Unit or can cling to pets, clothes, hair, and skin and be ejected into the air near a return, thus blown through the duct work of your air system. Spores are circulated within those lovely dark air ducts, hoping diligently that they will be deposited in a nice moist area in which to grow. It only takes 24-48 hours for mold to germinate and once it does, the contamination can quickly get out of control.

The 4 most common molds are:

  1. Cladosporium
  2. Penicillium
  3. Aspergillus
  4. Alternaria


Cladosporium is a genus of fungi that produce a brown, black, and/or olive green colored colony and are one of the most abundant species of mold with an astounding 772 types. This particular mold has been known to cause infections of the skin, nails, sinuses, and lungs.




Penicillium is a genus of green soil fungi that loves cool moderate climates and is not only harmful but also helpful. Some species of this type of mold are how we create penicillin to fight bacterial infections in our bodies. Other types of this geno are used in the creation of cheese. Then there are they strains of this mold that is more on the nefarious side of the fungi coin, and is known to produce mycrotoxins and also alerts to there being moisture in the home.




Aspergillus niger is a fungus and is known to cause the disease black mold. Being one of the most common molds in the world, it is highly recognizable and is found contaminating various areas inside and outside the home. Evidence of this common black blight can be found on aged onions, wet walls, and even in your air ducts. This mold is known to produce potent mycotoxins called ochratoxins. Aspergillus niger is one of the most common causes of otomycosis, a fungal ear infection that is known to cause severe ear pain, brief hearing loss and in very acute cases damage to the ear canal tympanic membrane.



Alternaria is a saprophytic fungus and a plant parasite; moreover, they are one of the primary allergens in humans and is its spores are known to cause hay fever, hypersensitive reactions in certain individuals that can contribute to asthma outbursts, and infections in immune compromised people. Other lovely disorders attributed to this fungus are infections/growths on human skin, respiratory tract, and eyeballs.


If you haven’t turned into a fungi-phobe ( made up, the technical term is Mycophobia) after reading the effects of the most COMMON ones, then definitely do not research the exotic molds. The above is reasoning enough to be careful of the silent and sometimes even deadly molds that are common around the world, especially those sensitive to the contaminant.

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