If you constantly fear being poisoned by odorless gas, then take a close look at the Morphix Chameleon. The device is a wristband designed to detect poisonous gasses in the air.
The Morphix Chameleon does not require batteries or solar energy to function, and is designed to stand up to intense heat, cold and wetness. The Chameleon's sensors change colors when a high concentration of the gas is detected. The wristband can detect an impressive 11 gases, which are: Ammonia, Sulfur Dioxide, Phosphine, Phosgene, Iodine, Hydrogen Sulfide, Hydrazine, Dioborane, Chlorine/Fluorine, and a variety of high pH and low pH gases. The Morphix Chameleon was originally designed for military use, but like all good pieces of military equipment such as the Humvee and M16, it is now available for civilian purchase.