I think the source of this odor is located west or northwest of downtown JC. Yesterday around 4 PM when I was driving eastbound on route 280, I immediately detected this horrible smell just as I reached the turn-off for Jersey City, i.e., at the intersection of Route 280E and 508E. The wind at the time was from the west or northwest. Prior to reaching the 508 East exit, there was no trace of this smell in the air. We have lived here in downtown JC since 2004 and have never smelled this odor before.