I am going to throw a holiday party in my new house, but my house is a little too small to have a lot of people over, without using my massive garage as a seating area. I would like to find a way to warm up my garage to a decent temperature without killing people from carbon monoxide! hahah I don’t know which way would be best? Would a space heater work? or do they emmit any harmful by-products? Any SAFE ideas would be great, THANKS!!