Do you mean pm 2.5, or other stuff? I think a smell test is pretty good, but in my experience it is only a burning or dry cooking smell that sets off pm 2.5 met

Do you mean pm 2.5, or other stuff? I think a smell test is pretty good, but in my experience it is only a burning or dry cooking smell that sets off pm 2.5 meters. So for example if I am frying chicken in a well oiled pan, and smell chicken, pm 2.5 does nothing. But if the chicken is browning and I smell....I dunno, the smell of browning chicken, that raises the meter.