Double edged sword.
Maria doesn't know whether or not to keep smoking. Yes, it's been taking a toll on her health, as she describes in this videos, in friendly chatter with POV. She should quit... yet her cigarettes bring her immeasurable pleasure. Not to mention she loves her black lungs.

Towards the end, she's in denial: no, she's healthy! She's only been smoking for a few years now, not enough time to have caused irreparable damage. Right? Even if it did, Maria is aware of her limitations: she COULD NOT quit, even if she so desperately wanted to x