Last year I heard that this was posible and was up till recently I have been ralatively careful storing rags.
However in this instance I had a WVO wet rag that was incorrectly stored on a top a plastic container and looked what happened...... Apparently this can happen with any oil soak rug.....
If I want to keep a rag to resuse it, I drape it over my vice, so it can be left open to the air. Even water soaked rags can build up enough heat to spontaneously combust. Not so common, but it does happen. So tell the good lady to be careful how she stacks wet washing!
All the best
BattyCuss 2 years ago