So we have a 2022 Bronco and tow behind our bus and I do smell that same odd smell after towing. Haven’t had any other issues yet and have probably towed it 4,000 miles so far. We Just got to Utah and was about to have the dealer check it out to see if all is ok. I do see the “Park Assist” line get has just come on but was figuring that was a loose wire I was going to chase down.