I put this Zarbees baby chest rub on my babies feet chest and back to help her stuffy nose and cough... can I use my humidifier while she has this on? It might me a stupid question but you can never be too sure. & has anyone used this product before? Did it work just as good as baby Vicks? Couldn't find any in the store so got this instead. Baby is about to be 2 months.. doctor said I can use this product if anyone is wondering.