Sewer smell while driving

[Keith 944]

i use to get that too, with side windows down, it would draw the smell forward, even with formaldehyde additive. whew, bad stuff. anyway, i bought a vent top, sorta looks like a wind vain. it attaches to the vent pipe and draws the oder out while driving. works pretty well. and def. worth the $5-15 bucks i paid for it! got mine at good old wal-mart...