There's a refinery next to one of the highways exiting Vienna, Austria: https://www.google.com/maps/@48.147145,16.5005479,3a,75y,168.57h,95.66t/data=!3m6!1e1!3

There's a refinery next to one of the highways exiting Vienna, Austria: https://www.google.com/maps/@48.147145,16.5005479,3a,75y,168.57h,95.66t/data=!3m6!1e1!3m4!1shsa0Otpyptoy36k2dWlkuA!2e0!7i16384!8i8192 https://www.google.com/maps/@48.147145,16.5005479,3a,75y,168... People live on the other side of that highway, so I guess it's possible, but I used to drive through that area on a regular basis and the smell hard to forget. Apart from that such facilities need to be large to be cost-effective.