High and Low?

About how low tar differ from high tar cigarettes.

At first manufacturer's thought less nicotine and tar would help.it was proven not any safer.The filters on cigarettes stop solid particles but not the poison gasses like carbon monoxide and ammonia etc.People who smoke low tar usually drag harder to compensate less smoke and smoke has to go through the filter,the smoke that comes off the end of the cigarette is the big problem.It’s the same in all cigarettes,you breathe it and that is the second hand theory-the smoke just from lighting up.