What is mold?
Molds are fungi . There are many different kinds and can be found indoors and outdoors. Molds spread through the creation of spores, which are in all indoor environments and cannot be removed from them.
Moist, humid environments are most conducive to the growth of mold. When mold spores land on a damp spot they begin to grow and digest the material they are growing on. Molds can grow on multiple surfaces, such as paper, wood, and fabric. 
Molds also have different forms and textures (white, black, yellow, green, etc) and normally appear as a discoloration of whatever surface they’re on. They can also have a velvety, fuzzy or textured appearance, depending on the type and where it is growing. 
Molds can produce a harmful substances such as allergens, irritants and mycotoxins – which are possibly toxic substances. The Environmental Protection Agency states that “In addition, mold exposure can irritate the eyes, skin, nose, throat, and lungs of both mold-allergic and non-allergic people.” 
Mold allergies can trigger similar symptoms to other allergies to possibly creating airborne substances affecting the upper respiratory tract.  These can include:
- Blocked/runny nose
- Itchy nose
- Itchy throat
- Watery eyes
The Dangers of Mold Exposure 
Molds can create much more serious side effects if one has been exposed for an extended period of time. Those with asthma have to take particular care to avoid contact or exposure with molds as they can be more at risk for side effects. 
Much of the time, molds can be dangerous just by existing and growing, other times they become dangerous when they are disturbed. Because of that, the more experience, the better when it comes to mold and the removal thereof. You should always be trusting a licensed professional to complete the project.
- WebMD, “Moisture and Mold Problems: Preventing and Solving Them in Your Home”, https://www.webmd.com/women/mold-mildew#1
- Poison Control, “Mold 101: Effects on Human Health”, https://www.poison.org/articles/2011-oct/mold-101-effects-on-human-health
- United States Environmental Protection Agency, “Mold and Health”, https://www.epa.gov/mold/mold-and-health
- HGTV, “Black Mold Symptoms and Health Effects”, https://www.hgtv.com/remodel/interior-remodel/black-mold-symptoms-and-health-effects
- How dangerous is mold, really?, Montana Maclachlan, youtube – https://www.youtube.com/watch?v=HPznf87cCYk
- Medical News Today, “Mold in the home: how big a health problems is it?”, https://www.medicalnewstoday.com/articles/288651.php