You may have gotten a clog in your evaporation system. This can happen when particles from a dirty gas can become stuck in the system lines. This is the system...
Curtains are a good start. If you have thicker curtains on your windows, it will trap heat in the house at night, making it warmer. Putting a rug down if...
The logs can let out an exhaust odor if they are not in the correct location. Check the owners manual and make sure the logs are sitting in the fireplace...
You do need a small amount of space, enough for oxygen to do its thing and circulate. Place the rocks in foil, set them down by the burner--not on top...
You can, but it will likely separate after a few hours if you don’t keep the bag absolutely airtight. You may be able to massage the icing to remix it...