Being the klutz that I am, I have kept a Tide To Go Pen in my desk for about the last year. The little things come in quite handy when you spill coffee, Diet Coke, etc. on you. This morning, I had a coffee mishap and dug around for my Tide Pen. I started applying the magic liquid to my shirt and soon noticed the smell of fresh puke. The smell was so bad that I almost had to hightail it to the trashcan.
Now, it's been a while since I applied the stuff, and I still smell like barf. I will probably smell this way all day.
So, apparently the little devices go rancid after a while.