As for the smell, I have really never had a problem with it. I put down newspaper and change it at least once or twice a day, depending on how messing they are being, lol. As for the weather....?....IDK. I am alittle worried about my chicks. I have 4 that are 7 weeks old and 4 more that are like 3weeks old. I am worried that it is going to be too cold for them but I plan on putting in a mild heat lamp in a small section of the coop if they dont fair well so they can have alittle bit of warmth (if needed). Hope your babies do well. Good luck and congratulations!