Mom taught you well, I'll bet. Swat the flies, pour disinfectant on a slimy mold, and shock a pool or pond that has algae in it. Never touch anything riddled with a fungus, avoid bacteria like the plague. If you see a termite, call Orkin, and if you see e.coli (well you wouldn't, unless you have Superman-like vision, but you get the idea), run screaming into the night. Of course, in biofuels, you don't avoid any of the above.