Venting experts: Does this seem OK to you?
When we redid the kitchen last year it turned out that, due various factors, the only way to vent to the outside was to go in the wall, down to the basement, across the basement ceiling, then out. I thought this was pretty ingenious of the GC. I understand that a run this long and with so many turns isn't optimal, but my hood seems to draw well anyway.
But when I run it, I notice that the basement smells like whatever I'm cooking. This suggests to me that the duct work isn't completely sealed. (Another possibility is that the vent outside is near the cellar door or window, and the smell is getting back in that way. But the basement doesn't smell like smoke when we grill out there, so I think that's less likely.) DH says it's virtually impossible to seal ducts enough so there is no leak. So do you think I have a problem or not?