Does Exposure To Toxic Moulds Cause Atrial Fibrillation?

My husband and I lived in a mold infested apartment for three years before we had it tested and found out what was causing all of our URI symptoms. The mold wasn't visible. Recently my husband developed atrial fibrillation during a surgey to remove fungus from his sinuses and orbital bone area. I recently had an experience (hospitalized for two days) of supra ventricular tachycardia. Neither of us has ever had any heart or blood pressure problems before. Upon examination both my husband and I were told we have "healty hearts". Could this have been from 3 years exposure to toxic molds specifically penicillium and aspergillus.