House has been on the market for a few days and we had our first couple of viewings this weekend. Just got feedback and one of them has said one if the rooms smelled of damp. We get occasional damp/mould in the room as its the side of the house exposed to the weather and the house is 100 years old. We've treated the wall and I've cleaned. No one else has mentioned a smell in the room. But just in case it's not just the viewers extra sensitive nose are there any suggestions for getting rid of a musty smell?