State and federal governments require that facilities evaluate potential exposure and notify nearby residents of potential exposures. So if no one is knocking on your door, or if you haven't received a notification from the state or someone else, then there probably isn't and immediate threat. However, that is based on known releases and doesn't necessarily account for fugitive emissions. If you are curious about what issues certain industries have around your neighborhood, a good place to start looking is the EPA ECHO website (see link below). You can pull up nearby facilities to see how well they are doing with compliance and in certain states you can look up the actual permits online anonymously. Other states may require an official FOIA request.

https://echo.epa.gov/