It is in the air. You cannot see it, smell it or feel it – but it is there. Floating silently through the breeze, creeping into homes, hospitals and lungs. Its name is Aspergillus Fumigatus, a fungus that thrives in warm and damp places. It is now showing up across some of the most populated and humid states in the United States. It is in the air. You cannot see it, smell it or feel it – but it is there. Floating silently through the breeze, creeping into homes, hospitals and lungs. Its name is Aspergillus Fumigatus, a fungus that thrives in warm and damp places. It is now showing up across some of the most populated and humid states in the United States.