I have had carbon monoxide in my home & in my bedroom on the second floor. Our fire department came to my house & said they didn't see or smell anything. I said there was no smoke, it just made me very dizzy. They still said there was no smoke. I didn't really know what carbon monoxide did. They took me to the hospital & they kept telling me I was imagining it & the Dr. said I had a heart attack & imagining things. I also got dizzy when I was next to cars that had terrible smoke coming out of the pipe on the cars & it made me fall asleep for a few seconds & my 6 year old grandson fell asleep too.. The Dr. insisted I was having a heart attack. This started 2 & a half years ago. I am not dizzy with in the last week.