Because mine smells like a sewer. I became aware of an eggy fart smell in the bathroom every time I brushed my teeth. I’ve narrowed it down to the bottom of the electric toothbrush, when I take it off the charger. The smell is collecting in the hole at the bottom. I’ve spent the last 15 minutes cleaning it out with cotton buds and Flash. Is this a normal part of everyone’s bathroom cleaning routine? Please tell me it’s not just me