Smelly old paint on walls

paint

I decided to paint the downstairs bathroom. A girlfriend insisted on helping and was predetermined on saving me money(so she says, now I think she was trying to sabotage) by bringing me paint that she had left over from a remodel. Well when my brother-in-law opened the paint(by the way it was a I think 5 gal container)he was like "WOW, that smells really bad, like water dripped or had gotten in the container." She swore up and down that it wasn't bad, yada, yada, yada..Now my bathroom smells soooo bad, like mold. Only two walls have been painted. But that's two walls too many. So my question is how and the hell do I get rid the smell, because it's been about three weeks and it still smells. Do I need to strip the paint? I even tried covering it with a new color and you can still smell it. HELP!!!!

Best Answer

Short answer: It will have to air out for weeks to months.

It may be possible to heat the room up as hot as you can get it to speed the out-gassing process.

Moral of the story: NEVER paint with old sour paint.

Good luck!