Here is the famous Botafumeiro of Santiago Compostela in Spain. Imagine what your parish youth group could do with this!
In my parish, all the thurfier persons are either smokers or asthmatics. I belong to the asthma inhaler club. Even so, I always tell the celebrant that if I can still see her/him 2 feet away, then it's not enough smoke.
The smoke never bothered me, but some of those hymns will send me scrambling for the inhaler.