When I use my stove hood I get smoke odours in my home, is that due to negative pressure and how do I fix it?

Updated: July 29, 2020

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?

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