A random aside: Old houses often don’t have fireplaces suitable for wood fires. Two of the three in my home are designed to heat the house via coal. Coal = soot and the fireplace is still covered in it. The walls would be cleansed of their soot using Playdough™. Yes, it used to be wall paper cleaner before it was a child’s toy. When people stopped needing to clean their walls because they had switched to another form of heat, the company took out the detergent and sold it as a toy, directly inspired by the creativity of one teacher.
Some sooty electric candles for your time