The answer.
No. Monitors only measure the things they are designed to measure, and placement and conditions affect readings. ALEX should help you understand patterns, rather than offer an all-clear for every aspect of your home. Our Science page explains this distinction.
A little more context.
A single reading is a snapshot of the things a monitor can measure. It does not describe every substance in the room or replace other ways of assessing a concern.
That is why we talk about understanding patterns rather than providing an all-clear. ALEX is not a medical device or a substitute for certified smoke and carbon monoxide alarms.