How harmful for your health is breathing in rubbing alcohol fumes?

Rubbing or isopropyl. If you breath a lot of these fumes they can be a severe irritant and cause nosebleeds. Isopropyl alcohol fumes can be absorbed into the lung membrane and result in brain and nerve damage. Common symptoms of nerve damage include dizziness and numbness. Less severe symptoms include nausea and headaches. When inhaled briefly or sniffed in a robust fashion, you may experience a quick headache.