Does household oven heat kill viruses/bacteria? This afternoon I'm preparing pizza for supper

Viruses denature at fairly modest temperatures.
For sanitization procedures in food, beverage, and consumer product manufacture, the microbiologists recommend 180F for 90 minutes.
For microbes, the destruction is a chemical reaction. There's more than one mechanism but they're either zero or first order kinetics.
So, every 10C doubles the rate.
Since pizza is cooked at 425F, that's a 345F difference, or around 190C. This increases decomposition by 2^19, or around 525,000 fold. So 90 minutes (5400 seconds), goes to just over a hundredth of a second.
And you cook it for 25 or 30 minutes.
Also, the oven is not a vacuum, so the protein part of a virus will also oxidize like crazy. Now we've got 2 different routes of decomposition.
Cooking makes it safe.

One of the big advantages of cooking food is it kills most pathogens. Prions are an exception.

But a microwave won’t do the trick. Well, it can if done correctly. When this first started my sister was microwaving her cash. Viruses are too small for the microwaves. I told her if she wet her cash them microwaved it the heat from the generated steam would kill the virus.

when she's doing this! Guess i'll have to look up prions now... Ok, did that...

"prion [pri´on]
any of several pathogenic, transmissible forms of the core of prion protein that cause a group of degenerative diseases of the nervous system known as prion diseases. Prions have a structure different from that of normal prion protein, lack detectable nucleic acid, and do not elicit an immune response."

more at link: https://medical-dictionary.thefreedictionary.com/prion

>>my sister was microwaving her cash

I mean come on... hasn't she heard of "money laundering" ?