Our spare room, which is probably only used about 6 times a years, has started to smell funny - a bit like BO. It is in the eaves of the house so gets pretty warm, particularly around this time of year. I think the smell might be coming from the carpet but it is a new build and we have only been in for 2 years so I don't understand why it would be smelling when the rest of the house is fine. Should I get a carpet cleaner in to see if that makes any difference?