Tech Air pollution inside my house could kill me. What are you breathing in at your home? September 15, 2019October 4, 2019 Jennifer Jolly, Special to USA TODAY Comments Off on Air pollution inside my house could kill me. What are you breathing in at your home? According to the EPA, most of us spend 90% of our time indoors, exposed to air that is up to five times more polluted than outdoors. Tech can help.