Yes it is possible. White-nose syndrome (WNS) is an emerging disease associated with the deaths of at least 5.7 million to 6.7 million North American bats.It is necessary to recognize that bats support unique communities of cave life through their guano deposition. Declines in bat populations is due  White-nose disease,  but guano deposits may affect their abundance of life in cave environments.The fungus Pseudogymnoascus destructanshas been found in caves  but still there is no link is reported on guano deposits. It may become a new reason of mass deaths of bats.Pseudogymnoascus destructans can only grow in low temperatures, in the 4 to 15 °C range (39–59 °F). Its growth may be supported by guano deposits.

Thanks for the great input, Ravi Kant Upadhyay.  I hope more will respond with more information or ideas for new research in this area.

Mulec et al 2014 reported about "Is Bat Guano a Reservoir of Geomyces destructans?".

Well, organic material such as guano could be a reservoir for the fungal growth. It is not well known or detected, that Geomyces destructans grows generally on organic material in the caves unless growth on organic material is shown in lab studies (e.g. Raudabaugh et al 2013). Nevertheless it is detected in the sediments (e.g. because spores fall down from infected bats). But, sites without droppings also have high contents of fungal growth on bats as bats do not defecate much while they hibernate. I have seen this in many sites in Germany - sites without guano have many bats carrying this fungus. We are looking at Geomyces destructans in the environment of the bats in their sites at moment...

Thanks for the references and helpful comments, Marcus.