Survey on Households and the Environment Classification by characteristics of the dwelling Percentage of dwellings whose residents have suffered problems with odours in their surroundings, and size of the dwelling (no. of persons occupying it) and cause, and which have taken some measure Units: % over the total number of dwellings ,With an odour problem,Due to smoke, tobacco etc.,Pipelines, sewerage, etc, ...,Farms,Industries (food, fishing, workshops, etc,...),Trade (supermarkets, fishmongers, etc.),Litter bins,Dumps,Other causes,Have taken some measure against odours (*), TOTAL,20.3,1.2,11.6,2.8,1.7,0.6,1.8,0.9,3.4,29.1, 1-person dwelling,14.2,0.7,8.9,1.6,0.9,0.6,1.0,0.5,2.1,30.1, 2-person dwelling,19.5,1.1,11.1,2.0,1.6,0.5,2.1,0.9,3.5,28.1, 3-person dwelling,22.9,1.5,12.8,3.4,2.1,0.9,2.0,1.1,3.8,29.4, Dwelling with 4 or more persons,22.8,1.4,12.8,3.8,1.9,0.3,1.9,1.2,3.6,29.1, Notes: 1) (*) % over the total number of dwellings with odours problems Source: National Statistics Institute