No such cause with mine. It would appear no matter where I was.Confirmed RAV4 is reacting with airstream from odorless industrial exhaust, emitting noxious fumes/odor. Able to recreate simply by moving vehicle in and out of airstream (able to recreate up to 1/4 mile from plant with 12 mph wind). Parked in airstream and had company Emergency Response Technicians verify presence of obnoxious odor and test for toxicity using Eagle 6 gas portable sampler. No toxic gas was detected even though fumes were significant to both technicians. Odor seems ubiquitous when present such that none could pinpoint specific source on vehicle.
If I were you though, I'd be worried about the air quality/safety around the plant.