“Freedom From Fungus: Why Don’t Humans Have Chestnut-Style Blights and White Nose-Style Syndromes?”, 2012-05-16 (; similar):
Fungi are some of the most common organisms around, prolific, hardy, and fungal infections are major causes of infection-related mortality in plants and reptiles and can infect and kill almost anything, but mammals usually die of bacteria/viruses/parasites.
Dying of a fungus is rare, and we hardly even get fungal infections except in odd places like our extremities (eg. toes), or odd times of life like when bats hibernate. Why? Perhaps because we are warm-blooded, so our body heat is fatal to fungi.
This explains why extremities or hibernating bats are vulnerable (colder). And perhaps this even played a role in the extinction of the dinosaurs and triumph of mammals?