Today we had the heat on to about 80, when we woke up we realized our heat wasnt working, it was because the maintnance man was tearing out the old boiler system and replacing it with a new one. Is it possible that carbon monoxid could have got in our apartment seems how we had our heat on???? My boyfriend is dizzy, nausious, with a headache, ever since this afternoon, when they started??WHat do you think?