I live on the second floor of an apartment building. Just last week new tenants moved in below us. They smoke on their patio which is right below our living room window. I can set my watch to them which is good because I always know when to shut my windows. 7:05 is usually the first time they go out so I shut my windows at 6:55. Today the go out at 6:45! Why!! Now my apartment reeks!