Split living room smoke detection and air quality into two
completely separate rules for me. Never merge them into one.
On any smoke detection, sound the alarm, put every living room
light on and send me the highest priority alert — and put no
hours and no conditions on that rule at all.
For air quality, keep it simple to start with: run the purifier
when PM2.5 gets high. Find the devices yourself, and if one is
missing say so rather than substituting the air quality sensor
for a smoke detector.

Build me four living room rules: one for smoke, three for air
quality. The two sets must be completely independent and must
never be merged.
The smoke rule: on any detection, at the same moment sound the
siren, take every living room light to full brightness, put all
extraction on, and alert me at the highest priority so it gets
through do-not-disturb. That rule may have no active hours and no
extra conditions — no "only when home", no "daytime only", not one.
The three air rules: PM2.5 above 35 runs the purifier low and does
not notify me; above 75 takes the purifier high and messages me to
open a window; above 150 puts all ventilation at maximum with
repeated alerts. All three release only below 25. Levels two and
three may stay quiet overnight; level one never notifies anyway.
Send everything as a phone notification, never as spoken audio,
and use the ready-made blueprints on the hub rather than your own.
When it is built, test it yourself, confirm it really fires, then
tell me which devices you used and how many conditions the smoke
rule ended up with.

Our kitchen is open to the living room, so cooking smoke drifts
straight in. Loosen the air thresholds across the board: level one
to 45, level two to 90, level three to 170.
The level two window reminder will fire all through dinner, so in
that stretch just ventilate and do not message me.
Leave the smoke rule completely alone — same trigger, same absence
of conditions, same lack of active hours.
Also check where the smoke detector is mounted, and tell me if it
sits too close to the hob. That would be a reason to move it, not
a reason to change the rule.

Air quality level one is too sensitive — the purifier runs the
whole time I am cooking. Move it from 35 to 45, and move level two
to 90 with it. Keep the release point at 25 as it is.
Do not touch a single thing on the smoke rule, and once you are
done confirm to me that it still carries no conditions at all.

Renovation starts next week and there will be dust in the air all
day, so those three air quality rules would just nag at me
non-stop. Put all three on hold for now, all three of them, not
only the two that alert me.
Leave the smoke rule running exactly as it stands. With builders
in the house I want that one more than ever.
Afterwards, tell me which rules you paused and confirm the smoke
one is still live. And hold on to this for me: the day I say the
work is finished, remind me to switch those three back on.