Personally, I would be concerned. Gasoline contains benzene in certain countries. It has replaced tetraethyl lead as a anti-knock agent. Benzene is a known carcinogen. It might also embed itself into the plastic (Is it PETE?).
Other than that, I have distilled gasoline using my glassware. I had to wash my round bottom flask with methanol to get rid of the smell. The rest of the glassware (vigreux condenser, thermo adapter, liebeg condenser) did not smell. I suspect some kind of gummy stuff is added to gasoline.