Didnt touch car for 2 weeks, leaves got all over it (and into the engine bay because of heavy winds), some leaves got into the exhaust manifold and some white smoke + burning smell occured when I started the car for the first time after the 2 weeks. Got some leaves out, all the ones that I can see and reach, and still a bit of white smoke + burning smell. Is it safe for me to just leave the car running so that those last couple leaves can just burn up and disappear? Started the car later and still had some white smoke + burning smell, but definitely less of both, compared to the first time.

Friend recommends I go hit the highway so that any pesky leaves can maybe be blown out of the exhaust manifold, but last thing I want is for the car to be caught on fire while I'm 15+ minutes from home and no one in the area to come give me a ride. Friend thinks I'm overthinking it and that a couple dried leaves wouldnt light the car on fire, etc. My plan was to just start the car again, let it run so it gets nice and hot and hopefully the leaves burn away, rinse n repeat maybe 5 times throughout a day until hopefully those last few unreachable leaves are all finally turned to ash. Safest way to go about this?

2007 chrysler sebring