Whhy do I get smoke odours in my home when I run the stove hood fan?
I have a single-family house built in 1961 and it has an oil heating furnace. When I renovated my kitchen I had a stove hood installed that vents directly to the outside. But when the hood is running at the same time as the heating system I can smell smoke in the house. I suspect a return of air through the furnace chimney, does this make sense and what should I do?