I'm working on a hard-sci-fi story where a scientist discovers microorganisms in our solar system with disastrous results. I was thinking about how any cross-contamination with an alien ecosystem would cause the organism to self-destruct in a similar manner to matter, anti-matter annihilation. I'm more inspired by science fiction works like War of the Worlds, The Andromeda Strain, Annihilation, etc., but I'm also interested in explaining how alien life could have evolved with novel-yet-similar mechanisms to life on Earth.
Leading me to the whole L-sided vs D-sided amino acids and protein synthesis. So how would the organisms interact with each other? I was thinking all the cells would self-destruct leaving behind traces of organic material and a myriad of novel viruses. Any material, references, or input is always appreciated.