Why dose everyone say that???

i not understand why EVERYone always come up n talk to me when i smokin in public place n they say u need to quit or u need to go outsides or malboro gona kill u!!!!!!!!!!!! i tell them to shove it n i sick n tIRE of people doin that 2 me!!!!!!!!!!!!!! why they beleve goverment conspearicy bout malboro caused cancer?????? i no it not true!!!!!!! why cannnot peoples just move aalong as they should n not bother me no more?????