Re: 2 things I'm wondering about
Those things do absorb smokes, but the smell doesn't linger or reek for more then half an hour.
If she hates the smell of "smoke" then she will probably be like '"why does it smell like watermelon in here?" not "Eww stop smoking!".
You can use a thick old rug, from the DI or something, you can sue those plastic things for offices that are for chairs to roll along smoothly (plastic rugs), you can use big squares of tiles and just place them down where you smoke.