I live with smokers and want to make a air filter to catch the particle left in the air. I learned one good way to do this is with heavy wet cloth. But how can I turn this whole idea into a filter to protect me I need thing that can protect within a good distance maybe 10 ft or so. Any ideas?

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    Stop living with people that smoke!! Move to another location. – Michael Karas Apr 9 '16 at 12:46
  • Before or after the junk is cycled through your lungs? If this was remotely feasible the concerns about second-hand smoke would be moot. – isherwood Apr 9 '16 at 22:13

The only good way to protect yourself is to not be around them.

They should smoke outside or you will need a high quality respirator.

Good luck!

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    Am now picturing someone casually sitting on the couch wearing a full biohazard suit with their roommates smoking around them. – Grant Apr 9 '16 at 14:16

most of the nasties in residual smoke are chemical in nature and not particulate. you wont be able to catch those with a mechanical filter like you want. time to start looking for a new home or convince them to smoke outside.

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