Hi, It's certainly possible to have fungus in the lungs.'Farmer's Lung' is a condition caused by handling mouldy hay and straw, very like emphasema. I would try some inhalations with steam and an anti-fungal oil, like oregano or tea tree, by putting hot water in a bowl with a few drops of oil and putting a towel over your head, covering the bowl, so that you breathe in the fumes for 20 min or so. Good Luck. Deotima.