Linux Mint 11 Rulez....
battery fumes occures with bad battery.Batterys with a too low acid level and have been overheated.I was referring to a situation with a regular low voltage battery .But yes , battery fumes are dangerous.A battery that explodes is something you don't want to experience.
And new rule: you're not allowed to apologize for your English anymore. If you didn't point out that English isn't your first language, I would not have even picked up on it. Honestly, you have a better grasp of sentence structure, grammar and spelling than a LOT of native English speakers. Don't sweat it anymore.