I'm not sure where the question of smoke came from (I've looked quickly through the topic but didn't see any reference to it until it just suddenly appeared), but it is possible to buy smoke "pills" from some toy or joke shops. I have some but haven't tried them out yet, but if you wish, Wolf Knight, I'll try one and take some photos for you to see what the smoke looks like.
Be very carefull all . in doors smokes, fires etc etc can be very dangerous. I wonder if the smoke pills would leave any residues on adjacent ceilings, walls etc etc
what are these smoke pills? with the berning sticks i mentiond above are very safe and leave the air clean in differance with the livani that makes a mist on the room after use,i don't know what are the smoke pills???
Here is a link to what Sir wolf has in mind http://chemistry.about.com/cs/howtos/ht/nontoxicsmoke.htm
That is great Giorginetto!!! Exactly what i had in mind !!! Thank very much!!! Very interesting and helpful on the precaution measures too!!!