Hi there, I'm new to owning and? and have some questions about winterizing since I live in cold northwest PA and will be storing my 28' starcraft travel trailer outside. When I empty the holding tanks for the last time and I'm preparing to put antifreeze in them should I also add deodorant? Will this cause any kind of chemical reaction or produce fumes? I'm worried that without deodorant the RV may not smell so fresh in the spring. Thanks!