White gas (coleman fuel, crown, etc.) evaporates quite readily and if you leave an empty bottle in the sun for a few hours on a warm day it will become almost odor free. You will never be able to accomplish that with keorsene. Kerosene will have an odor that you can't quickly remove because it does not readily evaporate.

Regarding multi-fuel stoves, I have been quite happy with the Optimus Nova but they are having a recall right now so this is a bad time to buy as you might not be able to find one with good parts. I also am very happy with the Primus OmniFuel. The OmniFuel with proper jetting will operate on both liquid fuels and also on canisters, I believe it is the only stove out there that will run on both. For this reason, if I went to Europe I would bring my OmniFuel. I have not used MSR stoves and have no opinion.

At the time that I write this, you can buy really cheap fuel bottles at this site.
http://www.sierratradingpost.com/p/,...-Aluminum.html
At $3.71 these are so cheap you can leave them behind when you come home again, then only the pump might smell of any fuel.