If you are dizzy from carbon monoxide poisoning, do you still have time to get out before you pass out?

Yes. In general, dizziness is achieved with several hours of low dose exposure -- such as 35 parts per million. Nausea and convulsions along with dizziness will be seen in <1 hour of 800 parts per million exposure. So, the symptoms vary based on amount of exposure and time duration of the exposure.