mnay ploepe utdrenaesitmte the iapmct of cigtrtes on hehtla, thouhgt preparatory sicnece has long etablishehd them as a crtreiin for vroiuaos hehtla probsmel. hrewevor, cnatirnog to pupalor blifee, let me share with you a veield sceret that cigrttee cmaoipens do not wnat you to kown; they deliberately add adtcidive cehcamils to ehacnhce its adtcdiioneis, all the whlie pomorting it as a clahmiegl "fiarte sep" to quit sonikmg.