I had a lot of fun watching the video, and I apologize for getting stuck so close to the end of the demo. What happened was that the hitbox of the tongue must have glitched, and the interaction icon simply didn't appear.
Regarding the cigarettes, you're right that you end up with too many near the end. We actually have a mechanic that I didn't explain: you can hold down the 'F' key which makes you smoke for longer, thus recovering more sanity.
We'll also work on making the tutorials easier to understand.
The Demcaont team truly appreciates your kind words about our project and your interest in following us on this journey. We'll see you at the next station.