Strategically, you have to either remove the source of the odor (porous material), seal or encapsulate it.The drywall and baseboard trick you mention is important.

Let's say too, that I write it up that if any part of the deal is found to be in violation, the security agreement shall become invalid, released and set off automatically to some other collateral which makes Dodd-Frank irrelevant (just thinking out loud here) how can that be any harm or foul?

Even if they don't smoke inside or outside the property, the odor of smoke in their clothing gets inside and permeates the place.

I've done several this way and the odor is gone. 

Then they would cry foul like the female you referred to. 

Vinyl plank glue used sometimes exhibit foul odor and will outgas for months.

If you ask it of ALL prospective renters, then no foul.

I was able to get it unlocked even though it had an older knob.The absolutely WORST (and what did it for me) was when applicants began to complain of a "funny odor " in the house. 

The unit next door they share a hallway to enter and exit the building, the tenant next door complained about the odor of smoke?

Anyway, then I use a stain/odor blocking primer like Kilz or Bullseye.