Latex mattresses do need to breathe in several ways; to get rid of the initial latex smell and to allow for the mattress to get proper air circulation. Since latex mattresses are designed to promote air circulation around the mattress in order to stay cool, they need to be placed on a slatted bed frame. Using a box spring will prohibit this. Also, when you buy a latex mattress, it will smell for a bit. It’s recommended to let the mattress air out until the smell dissipates before sleeping on it.