I have a 1 week old chick that appears to have a sensitivity to the pine bedding I have in my brooder. The bunch of 6 chicks are a little sneezy, but are otherwise acting and eating fine! One Has started a little head flick but is otherwise fine. All I have is pelleted corn cob right now and it is in their brooder. Is this ok or do I need to find another option? My adult hen is on them while she is currently living in my house and she is fine. What other options are there? And is there a problem with the one chick? I raised chicks on pine last year without a problem. Or am I overreacting?