Do Air Purifiers Help With Cigarette Smoke?

Is cigarette smoke a particle?#

The visible haze and the residue it leaves on walls and fabrics are particle-laden, the smallest particle class EPA tests, which is why it anchors the smoke column.

The smell is largely gas-phase. Gases carry no published CADR at any room size, and no filter figure will ever describe them.

What the rating covers#

The tobacco-smoke CADR is the benchmark column for fine particles. For this pollutant it is not a detail; it is the headline.

It covers the particle share only. Carbon adsorbs some of the gas-phase remainder, with no comparable number attached.

What sizing means here#

The published room minimum governs, rows rounded up between rows, 8-foot ceiling. Where smoking happens, the machine should meet or clear that row comfortably, because the load is dense and continuous while it lasts.

Smoke loads filters quickly; replacement filters belong in the household budget the way the cigarettes do.

Limits and honest caveats#

• No indoor smoking is the fix that actually fixes. The machine is for what remains.
• Run continuously in the affected room; the residue resuspends from fabrics.
• The smell is unrated, carbon helps some, and no number describes it.
• A machine whose pitch is ozone is selling a lung irritant, not a rating. Walk away.

Where the marketing overreaches#

"Smoke eliminator" claims exceed the rating, which covers particles delivered, not odours abolished.

Thirdhand residue on walls and fabrics is a cleaning and source-control problem; no CADR addresses a painted ceiling.