Ho ho! Except the smell denotes lethally toxic gas causing life-shattering or fatal injuries down the line Unfortunately it's only quite recently that such entries started getting much in the way of priority for treatment or rectification.
I have no intention of trivialising the matter. I speak having spent many years on one of the two worst affected types. Having donned my mask for exactly this reason, and having personally flown with one of our colleagues who died due to aerotoxic syndrome.
My point is, don't expect anyone else to protect you. Protect yourself by donning your masks. Or just keep your trap shut, your fingers crossed, and don't bother putting anything in the tech log!
Because by the time you land, it's too late!