I've just had a house fire because of a stupid $2 extension cord. I had 2 things plugged into it that were not in use and it fried. I probably have close to $100k in damages because of this.
Please, please, please, go around your homes and get rid of those cords and replace either with strips or 3 prong cords. You really don't want what has transpired happening, this is not fun at all. I've lost both of my machines in this, tons of my notions and fabrics. Some I can't even find! Disintegrated!!! All my projects, gone! Pressies, gone!
We lucked out that we were home when it happened or I would not have a house. That is not worth a $2 item on any budget.
Please keep yourself and your families safe!!!! Especially with the holidays coming, everyone uses those cords. Don't! Please.