OOC:
Just to be sure I am describing the scene clearly and everyone is on the same page:
• There is a sample right at your feet: the first fungus-infested roach husk.
• Because of the toad, you realized there is more than one dead roach in the area. There might even be more than two.
• The toad called other toads. But then the fungus began to take hold.
• From what you saw in the ghetto, where the man was infected after being attacked, ingestion is not the only mode of infection-- mere contact with the spore-spewing branching growths may very well be enough.
Given all that, I'll let you revise your action if you wish.
Otherwise, that's a Defy Danger. Good luck!