MOLD! PEOPLE PLEASE DO YOUR RESEARCH!
New Jersey has some of the worse mold cases/stories because old
contractors and do-it-yourselfers vented into the attic and not to the
outdoors!
Home inspections now often include mold inspections when the house is
older; my friend has walked away from 3 homes in New Jersey because all
had toxic levels of mold. 1 house was bulldozed recently because it
was unihabitable due to mold. Nice home, wasn't trashy BUT THE OWNER
VENTED THE BATH INTO THE ATTIC FOR 15 YEARS!