My house is on a slab (no basement, no crawl space) and every summer when it gets hot and humid i am getting a ground/soil smell in our living room. First i was blaming it on the absence of the basement but now realized that i only get this smell in one room. The only difference about that room is that it has a lawn along one wall and a flower bed along another.
Can that be a reason? Maybe i should pave a foot of space along that wall.
What else can cause it?