Bugger I should have patented that ideaWell, I purchased a large vacuum bag for AU$6.00. Ran a Honda eu10i for 30 min then shut it down - engine shut off and fuel cap breather - then let it sit for 30 min to cool down. Placed the generator in the bag, zipped up the twin seals and evacuated most of the air from the bag. Left it overnight in a closed plastic box on the veranda. Next day I sent my missus out with her sensitive nose and all good news - absolutely no fumes emitted!! Will need to buy a generator carry bag to protect the more fragile vacuum bag whilst in transit.