So, I want to use some equate Vaporizing Steam liquid through a humidifier for a nasty cough I have, The only problem is my Leopard Gecko is in my room, where I would put the humidifier. My question is: Is the Vaporizing Steam Liquid dangerous to Leopard Geckos? The liquid contains Menthol, and some other chemical things.

I recently got my first leopard gecko. He is for the most part untamed so far, and he is visibly about to start shedding. Will he make his way to his moist hide naturally? or do I have to find some way to bring him too it? Also, Will I have to help him shed all the way? or will he shed naturally?