Generators produce a lot of carbon monoxide, which is fatal when inhaled in large amounts. Using your generator in the garage, even with the doors open, leads to the accumulation of toxic gases that pose a health risk to you. 2. You do not need all that noise near you. 3. Generators produce a lot of heat, which when accumulated within an enclosed environment, can make the constituting parts jam and blow up. Set up your machine in a space with free-flowing air for sufficient ventilation. As much as you want to make the most out of operating generators in homes, you need to keep you and your family safe. Take all safety precautions seriously and keep the running machine at a considerable distance from your house.