There are many ways to harm your respiratory system such as smoking or breathing in asbestos. For urbanites living in cities across Europe, merely living and breathing in the city can be bad. A new study released by the European Environment Agency (EEA) found that most residents of European cities breathe toxic pollutants exceeding international health standards. The most deadly air within the EU is found in the eastern countries of Bulgaria and Romania, but there are few urban areas that escape unhealthy pollutants like ozone, nitrogen oxides, and particulate matter. The published study is already being seized upon by environmental groups who demand much tougher EU standards.