here's my concept drawing for if Venom got the metal virus from IDW's Sonic comics.

FYI: The metal virus is an infection that is spread via physical contact, and infects any living organism.

Now, venom's physical form is a suit, that can be worn by humans. Venom is able to provide immunity to its host against viruses, and i feel as though if venom was to contract the metal virus, it would cover him, however leave the human entirely intact, left to witness whatever the metal symbiote does with no control. Either that or the zombified symbiote will consume its host and eventually find another to consume. given that the zombot cant think, it won't try to maintain its host, and will continuously infect other humans

thats just my own headcannon though! let me know what you think!!