Contest HAMAS claims about teargas
Tyre fires produce much smoke, which carries toxic chemicals from the breakdown of synthetic rubber compounds while burning. That includes cyanide, carbon monoxide, sulphur dioxide, and products of butadiene and styrene.
The average passenger car tire is estimated to produce over 2 gallons of oil when burned. (Source: Rubber Manufacturers Association, April 2003)
Oil that exudes into ground and surface water as a result of tire fires is a significant environment pollutant. For every million tires consumed by fire, about 55,000 gallons of runoff oil can pollute the environment unless contained and collected. This oily material is also highly flammable.
In other words, Gaza may have created an environmental hazard for its residents for years to come.