Health hazards of inhaling smoke from incense(dhoop) sticks, camphor,do they require statutory warning?

Just like cigarettes eman ating smoke contain hundreds of chemicals that are injurious to health, does the smoke from ‘agarbattis’, incense sticks and camphor, at homes or religious places cause any harm to health. this question is not against the belief but is only an academic one. does this warrant some warning from government on packets containing the above, that the same should be lighted in open areas, etc. not in closed homes? some believe the smoke from substances has health improving qualities, besides of course, divinely significance. how far it is my fear justified in other way..
Answer
I am an alternative medicinal therapist and i can tell you for a fact that they are in no way harmful and do not require any statutory warning. in fact they are extremely therapeutic i use them all the time gloriashealth@btinternet.com