The person will most likely become obese and gain weight because they are intaking 1,000 extra calories then they should
Work out, eat healthy, and pay attention to your health
No u shouldn't leave it open.
It can be really dangerous.
For example: It might sound crazy but imagine a rodent eating the hose that the gas passes through,the gas leaks and dangerous things can happen cuz propane is flammable especially when mixed with air(oxygen).
