I have lived in the same house for 10 years. For the last five years I have noticed nodules on my throat and ear when I go downstairs. It will disappear after a day or two as long as I don't go downstairs. Now when my husband goes down and comes near me I get light headed and sick. Everyone thinks I'm crazy. The nodules are real and when I get them I clear my throat and cough so much that I make it sore. We have a downstairs cat, an oil furnace that stays empty most of the time and probably some mold in different places. The symptoms don't appear to make sense. Can anyone help?