Another condensation ?

We haven't had the condensation at the head of the bed, but we have had a small wet spot on the carpeted ceiling just above the sink/stove area when we were using the furnace and cooking a lot. When I contacted Keith at Northern Lite, he advised that we must use the stove fan and open something because we can get condensation which is what he believes it was. I'm just hoping that it was really just condensation and not a leak. We're keeping an eye on the area to see what happens over the course of the winter since it's stored outside. We have the Sportsman with the sliding windows so it's easy to crack a window for some ventilation.