Pasteur's hypothesis was that all life arises from other life.
No it wasn't. His hypothesis was that microbial contamination was due to bacteria already present in the container. His experiments were not set up to show that life could never arise from non-life, only that pre-existing bacterial contamination was the best explanation for spoiling foodstuffs.
I propose that all life on earth begins from other life. Do you agree or disagree?
Given the finite history of our universe it is impossible for all life to have come from other life, and this includes the Earth. So I would have to disagree.