The Ruckus has a modern four-stroke fuel-injected engine. It shouldn’t smoke or make a stench.
When I bought my house, I bought electric lawn tools as small engines are pretty terrible polluters. I read an article several years ago, by Car and Driver I think. They took a push mower, a Fiat 500 and F150 Raptor and hooked them up to some emissions testing equipment. 30 minutes of running the mower had higher emissions, other than CO2, then driving the Raptor 3000 miles.