late today my wife and I picked up a smell that smells like the chemical used in giving a woman a permanet. My wife has not had a permanet recently. We cannot find anything in the MH that gives off ...
AS a former owner of an 04 Southwind to get to the batteries just undo the two large screws set into the top step. Lift up and remove the step. The batteries are in plain view. On my unit, after 7 years much of the support material for the batteries was corroded and I was in there at least once a month checking water levels in the batteries.
That is a place to start even if there is no evidence of smell.