Should we get checked for carbon monoxide?

if something is letting off CO, it will have a yellow flame instead of blue or orange. start with that. if you can't tell, get a CO detector. they don't cost that much. plug it in and leave for about an hour. if it goes off while you're gone, shut off all the gas, open the windows and call a repairman and go to the ER for a blood oxygen test to determine how much may be in your system. not something to mess around with.