Wildfire smoke : old electronic air cleaner or normal pleated filter better?
Smoke particles are on the order of 1 micron.  A &quot;pleated&quot; filter is good down to about 3-5 microns so NO, that will not filter out the smoke.  Some will get through.
What you need is a HEPA filter, which usually involves adding a HEPA filter unit into your system and these are effective down to about 0.3 microns.