The idea of a filter just sounds like something to obstruct the flow. Maybe it prevents lung ca, but I doubt it.
The charcoal style will do more of that as the smoke physically passes through the filter containing activated charcoal vs. the balsa style that does more wicking by contact.When I asked my question I was think the pipe filter was for nicotine and tar, but have since discovered it’s more about moisture, slow burn, etc. Is there a filter mostly focused around tar and nicotine removal, or would that also filter all the notes and flavors.