Mold (Fungus) DNA is almost an exact match to human DNA and they have adapted methods to hack into our DNA and even break your DNA through what is called Horizontal Gene Transfer (HGT).

In addition to hacking your DNA, many fungi have the ability to cause what is called Programmed Cell Death (PCD) which essentially kills your cells in order for the killer fungi to finish you off ie: kill and consume you which in science is called decomposition.