It sounds like to me that you need to unblock the exhaust of your dryer. It is possible that your exhaust has come apart inside the bottom of the dryer and is sucking in the fumes from the burner. Either way you need to have someone that is qualified to fix it look at it before you blow your house up or burn it down. Sorry, I know that this kind of defeats the purpose of this site but safety first always.
Patrick, July 2010
