There are at least some cases where fungi can cause illness in otherwise healthy humans. The one that comes to mind is ergot, by ingestion of a chemical byprod

There are at least some cases where fungi can cause illness in otherwise healthy humans. The one that comes to mind is ergot, by ingestion of a chemical byproduct: https://en.m.wikipedia.org/wiki/Ergot https://en.m.wikipedia.org/wiki/Ergot A number of poisonous substances in mushrooms are reviewed in this wiki: https://en.m.wikipedia.org/wiki/Mushroom_poisoning https://en.m.wikipedia.org/wiki/Mushroom_poisoning I also checked "black mold," but it appears that link is not firmly established: https://en.m.wikipedia.org/wiki/Stachybotrys_chartarum https://en.m.wikipedia.org/wiki/Stachybotrys_chartarum Fungal pneumonia is well-known, but apparently not prevalent beyond the immunocompromised: https://en.m.wikipedia.org/wiki/Fungal_pneumonia https://en.m.wikipedia.org/wiki/Fungal_pneumonia