You might call the Poison Control hotline in your area. My guess is that those things don't contain anything dangerous because they are used in proximity to food, maybe some glycerine and alcohol, but it is worth calling. Those guys know everything.
I've called poison control twice so far, and my daughter is only 2. Anytime she eats something that is not food, I call just to make sure it's ok. I was 99% sure that the stuff she had in her mouth was harmless, but I wanted to make sure 100%. We've had to call many times at work too.
This site complies with the HONcode standard for trustworthy health information.
The Content on this Site is presented in a summary fashion, and is intended to be used for educational and entertainment purposes only. It is not intended to be and should not be interpreted as medical advice or a diagnosis of any health or fitness problem, condition or disease; or a recommendation for a specific test, doctor, care provider, procedure, treatment plan, product, or course of action. Med Help International, Inc. is not a medical or healthcare provider and your use of this Site does not create a doctor / patient relationship. We disclaim all responsibility for the professional qualifications and licensing of, and services provided by, any physician or other health providers posting on or otherwise referred to on this Site and/or any Third Party Site. Never disregard the medical advice of your physician or health professional, or delay in seeking such advice, because of something you read on this Site. We offer this Site AS IS and without any warranties. By using this Site you agree to the following Terms and Conditions. If you think you may have a medical emergency, call your physician or 911 immediately.