Mold is a type of fungi that can grow both indoors and outdoors. It is commonly found in damp or wet areas, such as in bathrooms, kitchens, or basements. Mold can also be found in HVAC systems that are not properly maintained.
Mold can cause a variety of health problems, such as respiratory problems, headaches, and skin irritation. It can also trigger asthma attacks. People with allergies or asthma are especially at risk for health problems from mold.
Mold can enter your home through open doors, windows, or HVAC systems. Once mold spores are in your home, they can grow on almost any surface, including drywall, carpet, and insulation.
To prevent mold growth in your home, keep the humidity level low and clean up any water leaks or spills promptly. You should also have your HVAC system inspected and serviced regularly.
If you suspect mold growth in your home, you should contact a mold remediation specialist. Mold remediation specialists can test for mold and remove it from your home.
https://www.cdc.gov/mold/faqs.htm
https://www.mayoclinic.org/diseases-conditions/mold-allergy/symptoms-causes/syc-20354110
https://www.webmd.com/allergies/mold-allergy#1