Do you mean the Andromeda Strain by Michael Crichton [1] (also a movie) and I seem to remember it being a good watch when I last watched though that might be a good 15 years ago. The idea was novel enough it's stuck with me since and I do often joke with people about it, especially given from what I gather that certain types of funghi can now digest certain types of plastic [2].
https://www.amazon.co.uk/gp/product/0670496626
There's not much info about it on the Amazon page nor Goodreads, but there's a good review of it here:
https://astrofella.wordpress.com/2018/07/27/mutant-59-the-pl...