The other day, I blended some apple juice, water, a packet of protein mix, and bannana in the same blender I mixed the same kind of shake a few days ago. About 5 hours after drinking, I puked 6x, measured temp at 101. This disappeared within 6 hours of the first episode of vomiting. I can't relate it to anything else I ate.
I assume the whey left over in the blender was infected by Bacillus cerus or I could have obtained a viral infection from something else. The time period strongly suggests food poisioning. The blender was partially washed out with water, but left sitting for a couple of days.
Question is, "Anyone ever got sick from a shake? How thoroughly do you clean your blender or shaker bottle after each use. Do you just rinse it or do you soap it too?"