Most healthy people are not harmed by mold, but ironically, prolonged exposure to mold will cause mold allergies. And people who have allergies or asthma may be more sensitive to molds. Some of the effects are skin rash, running nose, eye irritation, cough, nasal congestion, aggravation of asthma or difficulty breathing, immune suppression or underlying lung disease.
Additionally, mycotoxins are toxic substances produced by mold which cause toxic effects, including fatigue, nausea, headaches, and irritation to the lungs and eyes.