White fog in basement

[Tessie]

We were working in the basement of a home. It was nearly empty of any clutter. There were a few small sandbags placed around the basement as if marking off square spaces. My brother was performing work on some of the equipment in the basement, like the furnace or the hot water heater, something that had an open flame. I was using a white vapor insecticide in the basement, like the kind they used to use to fog wooded areas before they found out it was so horrible for the human nervous system. I was trying to kill bugs in the basement, but once I released the chemicals, I realized they could create an explosive situation for my brother, so I encouraged him to get out of the basement and let it air, but I don't think I told him why. After we were out of the basement, I realized we should have placed fans to aid in the air circulation.