I have a 2 year old corn snake that has sneezed off and on for as long as I can remember. He's never had any mucus or wheezing and has never rejected food. I guess I just don't know why he's sneezing and if I should worry about it? He eats about every 5 days and is nice and shiny and health looking. I use crushed walnut bedding because I tend to be allergic to most the other beddings. I give him clean water every few days and keep his temperature around 70-80 degrees. I guess I am just asking if I should worry about the sneezing or if it's not a big deal?