How would you like to wake up to the smell of bad eggs? Rumiya Dzhenblatova's family lives in southern Russia, near the largest chemical factory in the world. In Rumiya's living room there are five large round yellow balls hanging on the wall. Inside each ball there is a gas mask. "When I see Luisa's nose bleeding, I know it's the gas again. If we are too slow to put on the masks, we feel sick," says Rumiya.