Consumer grade Air Quality Index devices give off crazy readings from things you wouldn’t think they would. If a normal reading indoors is about 100, someone walking by with perfume on can spike it to 450 for a few seconds. Someone using a cleaning product to wipe down a table can spike it to 250. Someone cooking meal can spike it to 400.

None of those are things we’re looking to change, but would show up in your readings you’re proposing.