Mold Education

What kind of mold is dangerous?

  • Toxigenic molds. Some toxigenic molds may create the chemical metabolic byproducts called mycotoxins, which can cause a toxic response in humans and animals

Can mold grow in your lungs?

  • The mold spores can colonize (grow) inside lung cavities that developed as a result of chronic diseases, such tuberculosis, emphysema, or advanced sarcoidosis.
  • The fibers of fungus might form a lump by combining with white blood cells and blood clots. This lump or ball of fungus is called an aspergilloma or mycetoma.


Stachybotrys (Black Mold)


Types of Mold

Mold comes in a variety of colors, the most common white, grey, or black. Common types we test for (not inclusive) are listed below:


  • This is an allergenic mold, which means you can tell it’s there if you have allergic reactions like coughing, watery eyes, etc.
  • It’s the most common form of mold found in showers or bathtubs (could mean water damage) and is recognized by its velvety texture with dark green or brown hairs
  • It spreads incredibly quickly and can lead to asthma symptoms, so it’s important to act fast. Chronic cases may develop pulmonary emphysema


  • Spores of this type are reported to be allergenic
  • This mold can grow relatively well in damp, enclosed, wet or air sealed surfaces or materials
  • It can be found on Windows, Upholstered furniture, Rugs and mattresses, Walls and cabinets and Airtight closets
  • Staying in a place with this type of mold over a prolonged period can result in severe allergies
  • Some of the major allergy symptoms developed by this mold: Headache, respiratory difficulties, nausea, fatigue and dizziness, asthma, ringworm, athletes foot, and more


  • A mold that has toxic capabilities, Aspergillus is a common mold found in American homes
  • It can form thick layers on the walls with its long flask-shaped spores
  • With over 185 species and various colors, it could lead to specific allergic reactions or respiratory infections


  • A fungus with large spores that could be expected to be deposited in the upper respiratory tract
  • This fungus can produce the mycotoxin – sterigmatocystin, which has been shown to produce liver and kidney damage when ingested by laboratory animals
  • Found in soil and on house plants and vegetables, it is also known as “gray mold”. It causes leaf rot on grapes, strawberries, lettuce, etc.
  • It is a well-known allergen, producing asthma type symptoms in greenhouse workers and “wine grower’s lung”


  • Typically seen where there is severe water damage, Chaetomium has a texture similar to cotton
  • While the color starts as a white or grey, it turns to black over time and generally has a musty odor
  • Make sure not to touch as this could also lead to skin and nail infections


  • Another allergenic mold, this type of mold almost looks like suede and is generally an olive green or brown color
  • Typically causing allergic reactions, including respiratory issues, it is commonly found in fabrics in the property like carpet


  • This allergenic and toxic mold is pink, white, or red in appearance and spreads quickly as it grows on food
  • Just make sure you check your food because this could lead to allergic reactions like a sore throat or nervous system damage from the toxins


  • Blue-green in appearance and velvety texture identify this allergenic mold
  • The mold spores can move through the home through the air leading to respiratory issues or symptoms of asthma
  • You’ll generally find this where there is water damage, notably in mattresses or wallpaper
  • Commonly found in soil, food, cellulose and grains. It is also found in paint and compost piles
  • It may cause hypersensitivity pneumonitis, allergic alveolitis in susceptible individuals. It is reported to be allergenic (skin). It is commonly found in carpet, wallpaper, and in interior fiberglass duct insulation
  • Some species can produce mycotoxins. Common cause of extrinsic asthma (immediate-type hypersensitivity: type I)
  • Acute symptoms include edema and bronchospasms; chronic cases may develop pulmonary emphysema
  • It may also cause headaches, vomiting, and diarrhea

Stachybotrys (Black Mold)

  • This toxic mold is slimy in texture and a dark green or black color
  • Found in damp areas that have been humid for weeks at a time, it could lead to severe health issues
  • Individuals with chronic exposure to the toxin produced by this fungus reported cold and flu symptoms, sore throats, diarrhea, headaches, fatigue, dermatitis, intermittent local hair loss and generalized malaise
  • Other symptoms include coughs, rhinitis, nosebleed, a burning sensation in the nasal passages, throat, and lungs, and fever
  • The toxins produced by this fungus will suppress the immune system affecting the lymphoid tissue and the bone marrow
  • Animals injected with the toxin from this fungus exhibited the following symptoms: necrosis and hemorrhage within the brain, thymus, spleen, intestine, lung, heart, lymph node, liver, and kidney


  • Black in appearance, this is generally found in rooms in the property with the highest moisture following bad water damage or condensation
  • Bathroom/basement etc. This mold is easily confused with other types, so always call a professional because it could lead to health issues like hay fever