This is because, for the past gazillion years I have smoked two packs a day, and I never went outside to smoke. Now...it's saturated with the smell, and that...is a good thing.
It's good because I have not had a cigarette in 5 days, I was going to give the house a total scrubbing plus washing every piece of linen and furniture in the place but, it keeps me from smoking. When I think of a cigarette, that smell slams into me and no cigarette. The place does need scrubbing, and disinfecting and de-smoking, but after the call to smoke has subsided.
For now, I'll live with the smell and keep on not smoking.