Observation. People transported are family members and friends visiting from the thanksgiving holiday. She was visiting in the lower unit when the firefighters arrived. The neighbors came down and told us we should get out because the uh the alarms were going out and they tested positive for Carbon Monoxide. When firefighters tested for Carbon Monoxide the readings were negative, but the homes co alarm was emitting a steady beeping sound. They said it was going off for several days. They thought it was a low battery. This is the co testing gear the firefighters used on the residents. When they tested the me the reading was 1. Some of the residents tested from 11 to 15 meaning they had the odorless and colorless gas in their systems and were feeling symptoms of the co poisoning. Feeling light headedness and dizziness are some of the indications. It can come from gas appliances like faulty water heaters or space he heaters. It is the leading cause of poisoning in the country. Residents w