# Passive smoking

**URL:** <https://boards.straightdope.com/t/passive-smoking/789104>\
**Category:** Cecil's Columns/Staff Reports\
**Created:** [June 16, 2017, 10:00am UTC](https://boards.straightdope.com/t/passive-smoking/789104 "2017-06-16T10:00:27Z")\
**Posts on this page:** 2\
**Page:** 2

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**Author:** ![mikecurtis](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/mikecurtis/32/3284_2.png) [@mikecurtis](https://boards.straightdope.com/u/mikecurtis)\
**Post date:** [July 6, 2017, 3:24am UTC](https://boards.straightdope.com/t/passive-smoking/789104/21 "2017-07-06T03:24:40Z")

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not so much says [Cecil](http://www.straightdope.com/columns/read/3288/do-cigarette-filters-do-anything)

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**Author:** ![John\_W.Kennedy](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/john_w.kennedy/32/1031_2.png) [@John\_W.Kennedy](https://boards.straightdope.com/u/John_W.Kennedy)\
**Post date:** [July 6, 2017, 4:14am UTC](https://boards.straightdope.com/t/passive-smoking/789104/22 "2017-07-06T04:14:07Z")

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My mother had a Venturi filter in a cigarette holder that had to be cleaned after every pack. Gawd! it was disgusting. But you could tell why they call it “tar”.

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