was my first thought:
[Histoplasmosis, also known as Darling's disease,[1][2] is a disease caused by the fungus Histoplasma capsulatum. Symptoms of this infection vary greatly, but the disease primarily affects the lungs. Occasionally, other organs are affected; this is called disseminated histoplasmosis, and it can be fatal if untreated. Histoplasmosis is common among AIDS patients because of their lowered immune system.
en.wikipedia.org...
Acute symptomatic pulmonary histoplasmosis. This form of histoplasmosis tends to occur in otherwise healthy people who have had intense exposure to H. capsulatum. Because the severity of the disease depends on the number of fungus spores inhaled, reactions may range from a brief period of not feeling well to serious illness. Typical signs and symptoms include:
* Fever
* Headache
* Dry cough
* Chills
* Chest pain
* Weight loss
* Sweats
In some cases, arthritis or pericarditis — an inflammation of the sac that surrounds the heart — may develop weeks or months after the initial infection. These problems aren't a sign that the infection has spread outside your lungs. Instead, they develop because your immune system responds to the fungus with an unusual amount of inflammation.
On the other end of the spectrum, people who have inhaled a large number of spores may develop severe acute pulmonary syndrome, a potentially life-threatening condition in which breathing becomes difficult. Acute pulmonary syndrome is frequently referred to as spelunker's lung because it often occurs after intense exposure to bat excrement stirred up by explorers in caves.
I am not a doctor but I would bring this up and have them tested
Best of luck to you.


