I am a bit confused here. The Catholic Church would surely not have given creedence to the theory of spontaneous generation as the origin of life?
Early Earth Environment
It was once believed that life could come from nonliving things, such as mice from corn, flies from bovine manure, maggots from rotting meat, and fish from the mud of previously dry lakes. Spontaneous generation is the incorrect hypothesis that nonliving things are capable of producing life. Several experiments have been conducted to disprove spontaneous generation; a few of them are covered in the sections that follow.
Science believes this theory belongs with flat earth, burying bacon to cure warts, kissing a frog to produce a good man
The Catholic Church teaches that God breathed life into Adam and gave his body a soul. Not that a bunch of dust suddenly got up and organised into life.
Now as far as Spontaneous Combustion goes…