Common knowledge that hasn't passed scientific rigor is not actually knowledge. There's value in testing things other people haven't bothered to test, because if you get a weird result that often leads to new science.
Yes, but there we speak of a general case. In general, it’s well known that bacteria and virus are killed/inactivated by high temperature. SARS-Cov2 is a prime example with hundred papers confirming its inactivation by high temperature or sun light exposure. So for me it’s interesting only if there is a case which is NOT.