As noted in posts above, the canister stoves are the option that is most odor free since the fuel is in the vapor phase at room temperature and you would leave the fuel tank (canister) behind.

The svea stove has a wick that is probably what still caused it to have a slight odor, rinsing out that wick with water would not be enough to completely remove remaining gasoline from the wick. The human nose can smell gasoline at a level of only a few parts per million level in the vapor phase. For this reason, the svea is the last gasoline stove that I would ever try to travel on an airplane with because it is virtually impossible to make that odor free in only a few days.

There is nothing you can do if you have an overly aggressive airline employee.