Used ours 5 years now. No grease or smell on the canvas but do get smoke in the camper if someone opens the door to go in or out (but that is part of camping). we don't really like it, ours does not heat very evenly and has rusted out the tray that goes just under the grill surface. The markings have also come off the gas control, but it got the job done. Just replaced it with a Coleman sidetrip that uses the green bottles. would rather use that where I can move it anywhere.
HTT: "EscapeII" 2016 Shamrock 23WS (current)
PUP: "Escape" 2010 Rockwood HW 277 (gone)
TV: "Bruce" 2011 Dodge Durango V8 Hemi Crew
Just us gals (me, Sis and our daughters)
Traveled 19520 miles and 209 nights in 7 years and counting