Mould itself isn't harmful. The spores it produces frequently release dangerous allergens that can harm your health if eaten, inhaled, or touched. The dangerous effects of damp and mould can be highly damaging to children's health. They are a common cause of respiratory problems and can also lead to skin infections and other illnesses. In extreme cases, mould can even be fatal. It is important to follow some safety measures to reduce the risk of mould and dampness in your home, especially if you have small children.