▁spaces . ▁Legisl ation ▁may ▁also ▁define ▁sm oking ▁as ▁more ▁generally ▁being ▁the ▁carrying ▁or ▁possess ing ▁of ▁any ▁lit ▁to b acco ▁product . ▁ ▁R ationale ▁ ▁Sm oking ▁b ans ▁are ▁en act ed ▁in ▁an ▁attempt ▁to ▁protect ▁people ▁from ▁the ▁effects ▁of ▁second - hand ▁smoke , ▁which ▁include ▁an ▁increased ▁risk ▁of ▁heart ▁disease , ▁cancer , ▁em phys ema , ▁and ▁other ▁dise ases . ▁La ws ▁implementing ▁b ans ▁on ▁ind oor ▁sm oking ▁have ▁been ▁introduced ▁by ▁many ▁countries ▁in ▁various ▁forms ▁over ▁the ▁years , ▁with ▁some ▁legisl ators ▁cit ing ▁scientific ▁ ▁evidence ▁that ▁shows ▁to b acco ▁sm oking ▁is ▁harm ful ▁to ▁the ▁sm ok ers ▁themselves ▁and ▁to ▁those ▁in hal ing ▁second - hand ▁smoke .' In ▁addition ▁such ▁laws ▁may ▁reduce ▁health ▁care ▁costs , ▁improve ▁work ▁product ivity , ▁and ▁lower ▁the ▁overall ▁cost ▁of ▁labour ▁in ▁the ▁community ▁thus ▁protected , ▁making ▁that ▁work force ▁more ▁attract ive ▁for ▁employ ers . ▁In ▁the ▁US ▁state ▁of ▁Indiana , ▁the ▁economic ▁development ▁ag ency ▁included ▁in ▁its ▁ 2 0 0 6 ▁plan ▁for ▁acceleration ▁of ▁economic ▁growth ▁encourag ement ▁for ▁cities ▁and ▁towns ▁to ▁adopt ▁local ▁sm oking ▁b ans ▁as ▁a ▁means ▁of ▁prom oting ▁job ▁growth ▁in ▁communities . ▁ ▁Add itional ▁rational es ▁for ▁sm oking ▁restrictions ▁include ▁reduced ▁risk ▁of ▁fire ▁in ▁areas ▁with ▁explos ive ▁ha z ards ; ▁clean lin ess ▁in ▁places ▁where ▁food , ▁ph