Carbon monoxide gas is tasteless, odorless and invisible to eyes. It is difficult to detect the carbon monoxide poisoning as the symptoms are simple like headache, ringing in the ears, chest pain, nausea, vomiting and muscle weakness.  More serious symptoms include unconsciousness, respiratory and cardiac arrest.
Victims of carbon monoxide poisoning are very often unaware of the presence of this invisible gas so the deaths have increased over the past few years.
Staying warm in the winter is the desire of all, however, most cases of carbon monoxide poisoning can be attributed to furnaces, fireplaces and wood stoves. Carbon monoxide gas forms by the incomplete burning of organic materials such as natural gas, wood, paper and coal we use to heat our homes. Charcoal and gasoline when burned incompletely can also produce dangerous levels of carbon monoxide.
The symptoms of carbon monoxide poisoning may come and go. These flu-like symptoms may seem to worsen or improve at certain times of the day or in certain places. If the gas is being produced in their home the victim may notice they are feeling better at work or outdoors. Other people around the victim may be experiencing similar symptoms and if the gas is being produced in their home, their pets may be ill also. So, you can easily detect the poisoning of carbon monoxide.

How to provide help to a person suffering from carbon monoxide poisoning?
If you have discovered a victim of carbon monoxide poisoning immediately remove them from their toxic environment to a place providing fresh, clean air. Then call 911 for emergency assistance. Emergency medical personnel will be able to provide the victim with pure oxygen. This treatment will improve oxygenation and disassociate the linkage between the carbon monoxide and the hemoglobin of the victim.
 If will also help to monitor the victim until emergency assistance arrives. Make sure their airway is open. If the victim is talking or responsive their airway is open. If the victim feels uncomfortable to breathe, his chest is rising or falling, then you need to administer CPR. Also check an unresponsive victims pulse by feeling the side of the neck. If a pulse is absent administer CPR. Always place victim on one side.
Carbon monoxide poisoning is detected through blood test.