said by MaynardKrebs:It was built in 2005.
When was the building constructed or majorly renovated? That will tell your which version of the fire code is applicable.
said by MaynardKrebs:It's coming through the wall, it's from when the neighbours are smoking in their unit. Air path goes directly between the two adjoining units, and there's a strong air pressure to blow the smoke due to the design of the building. I was looking at the design plans earlier. After plugging the hole, I can't smell any smoke from their unit anymore.
Is the smell coming through the wall or is it the heater? If it's the heater, call an electrician - there may be some arcing going on.
Sorry for the poor terminology, I do mean an electric baseboard heater!
The more I C, the less I see.