Nesting? That pastel nursery you eyed in a catalogue might not be so healthy for your baby: A study linked frightening levels of chemical-based indoor air pollution with new baby decor, specifically the furniture, mattress and paint. In 2012, “Good Morning America” set up a nursery with new furniture, paint and a crib mattress, then tested for contaminants. Shockingly, the air in the nursery with new baby decor contained 300 different chemicals, while the air outside the window showed just two. Why?