there are filters out their that are not to expensive even as cheep as 5 dollars, that would stop all this, the cheapest one I have seen is called "Hello Neighbor"

SMOKEBUDDY AIR FILTER REMOVES SMOKE HELLO NEIGHBOR - eBay (item 220543431012 end time Feb-18-10 15:10:58 PST)

this is not it but the closest thing I could find, the hello neighbors they sell at smoke shops or head shops usually where they have bongs and papers they have hello neighborers they look like a chap stick or a lip stick container