Is boiling vinegar safe?

Boiling vinegar can be safe when done properly with adequate ventilation, but it releases acetic acid vapors that can irritate eyes, nose, throat, and respiratory system. The vapors are particularly harsh in enclosed spaces. If boiling vinegar for cleaning purposes (like removing burnt food or deodorizing), ensure windows are open and use exhaust fans. Brief, well-ventilated boiling is generally safe, but prolonged exposure to concentrated vapors should be avoided. Never boil concentrated acetic acid (above 10%) as it produces dangerous corrosive fumes that can cause serious respiratory damage.