Hand Dryers in Public Bathrooms: C’mon. These never get your hands dry. And while hand-dryer manufacturers have contested the findings, some studies have shown that hand dryers actually blow germs onto your hands and all over the bathroom.
The Air Circulation Button in Cars: By the time you realize there is a bad smell outside the car (because you smelled it) and press this button, the smell gets trapped inside with you.
Pop-Up Stoppers: These are the ones actually inside your sink or tub drain. By pushing and pulling a button, you close and open the drain. But these stoppers invariably – and regularly – get crapped up by what one plumbing website delicately refers to as “bio matter,” causing a clog. Then, you have to pull the stopper out of the drain and clean off said bio matter. Eww. Note to plumbing-fixture designers: Whatever bio matter I produce in the shower or at the sink, I want to put it down the drain and NEVER DEAL WITH IT AGAIN.
I am sure there are others ….