If the source came from an ac unit it could be an actinobacteria which is commonly found in silos, soil, corn mills, air conditioning units, and closed stables I have the same systemic infection and issues which came from taking a health supplement called deer antler velvet spray which had the infectious bacteria t. whipplei in it. Hope this possibly helps you. It took me a while to figure all of this out and the only reason I did is because God that and because I was a respiratory therapist for 10 yrs in a major city hospital in Philadelphia. Basically it's whipple's disease which can spread to every area of your body systemically. Any questions you can email me at hardtwizzler33@gmail.com