Perfect timing, jeez just when your in the middle of doing something as important as that.Chimney blocked?cookers or ranges on? Call poison control maybe that’s very dangerous. Ours went off as well once. I’d say once you open the windows should be fine, ours was it didn’t go off again. If it does then there’s real danger
I agree that you need to call for emergency help. Carbon Monoxide needs to be taken very seriously as it can make you sick or, worse, be fatal. Please be careful!
I once smelled smoke in my house. I couldn’t find the source. I told my family and they said not to call and that I was overreacting. I called anyway. It turned out our furnace was on fire! I was so lucky the whole house didn’t explode. I was right to call.
Call non emergency fire department and let them know and ask what their protocol is. They might send someone out, they might just tell you what you should do.
I’ve called non emergency fire department several times for smelling smoke. I always tell them I’m not sure if I’m just imagining it and they pretty much always come out for reassurance.