COVID-19 is not a living organism, but a protein molecule covered by a protective layer of fat. It cannot be killed, but does disintegrate.
Rainbow trout are the most popular freshwater sportfish in North America and the Columbia River is an outstanding tailrace fishery that routinely produces rainbow between 16-26 inches and up to 10 pounds. The Columbia River and surrounding water bodies offers anglers much more. Catch walleye up to 14-pounds, battle massive Gerrard rainbows and bull trout on Arrow Lakes, or troll for freshwater sockeye salmon (aka Kokanee). This is what WeSportFish for.