Why Your Protein Shaker Still Smells After Years of Rinsing: A Microbiologist Explains
You’ve been rinsing your protein shaker every morning for years, but the smell never fully disappears. The culprit isn’t the main chamber you’ve been cleaning so carefully—it’s the lid. A microbiologist reveals why bacterial biofilm thrives in your shaker’s gasket and threading, and shares the surprisingly simple fixes that actually work.