Molds are found everywhere inside and outside, and can grow on almost any substance when moisture is present. Molds reproduce by spores, which can be carried by air currents. When these spores land on a moist surface that is suitable for life, they begin to grow.
Asbestos is a risk in the home when it is disturbed in a way that produces dust that contains asbestos fibres. In many cases the presence of asbestos and asbestos-containing materials in the home is no cause for alarm if the material has not been damaged.